diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index 3e5a4f97e59..3b5a1c2e943 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -295,10 +295,11 @@
 @ stdcall RtlClearBits(ptr long long) RtlClearBits
 @ stdcall RtlCompactHeap(long long) RtlCompactHeap
 @ stdcall RtlCompareMemory(ptr ptr long) RtlCompareMemory
-@ stub RtlCompareMemoryUlong
+@ stdcall RtlCompareMemoryUlong(ptr ptr long) RtlCompareMemoryUlong
 @ stdcall RtlCompareString(ptr ptr long) RtlCompareString
 @ stdcall RtlCompareUnicodeString (ptr ptr long) RtlCompareUnicodeString
 @ stub RtlCompressBuffer
+@ stdcall RtlComputeCrc32(long ptr long) RtlComputeCrc32
 @ stub RtlConsoleMultiByteToUnicodeN
 @ stub RtlConvertExclusiveToShared
 @ stdcall -ret64 RtlConvertLongToLargeInteger(long) RtlConvertLongToLargeInteger
@@ -428,7 +429,7 @@
 @ stub RtlInitializeContext
 @ stdcall RtlInitializeCriticalSection(ptr) RtlInitializeCriticalSection
 @ stdcall RtlInitializeCriticalSectionAndSpinCount(ptr long) RtlInitializeCriticalSectionAndSpinCount
-@ stdcall RtlInitializeGenericTable() RtlInitializeGenericTable
+@ stdcall RtlInitializeGenericTable(ptr ptr ptr ptr ptr) RtlInitializeGenericTable
 @ stub RtlInitializeRXact
 @ stdcall RtlInitializeResource(ptr) RtlInitializeResource
 @ stdcall RtlInitializeSid(ptr ptr long) RtlInitializeSid
diff --git a/dlls/ntdll/rtl.c b/dlls/ntdll/rtl.c
index fc3028214f6..0ca577821d9 100644
--- a/dlls/ntdll/rtl.c
+++ b/dlls/ntdll/rtl.c
@@ -5,6 +5,7 @@
  *
  * Copyright 1996-1998 Marcus Meissner
  *		  1999 Alex Korobka
+ * Crc32 code Copyright 1986 Gary S. Brown (Public domain)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -21,6 +22,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -37,6 +41,54 @@ WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
 
 static RTL_CRITICAL_SECTION peb_lock = CRITICAL_SECTION_INIT("peb_lock");
 
+/* CRC polynomial 0xedb88320 */
+static const DWORD CRC_table[256] =
+{
+    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+    0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+    0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
+    0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+    0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+    0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
+    0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+    0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+    0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
+    0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+    0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+    0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+    0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+    0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+    0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+    0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
+    0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+    0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+    0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
+    0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+    0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+    0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
+    0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+    0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+    0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
+    0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+    0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+    0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+    0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+    0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+    0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+    0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
+    0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+    0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+    0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
 /*
  *	resource functions
  */
@@ -398,27 +450,28 @@ DWORD WINAPI RtlQueryEnvironmentVariable_U(DWORD x1,PUNICODE_STRING key,PUNICODE
 	FIXME("(0x%08lx,%s,%p),stub!\n",x1,debugstr_w(key->Buffer),val);
 	return 0;
 }
-/******************************************************************************
- *  RtlInitializeGenericTable		[NTDLL.@]
- */
-DWORD WINAPI RtlInitializeGenericTable(void)
-{
-	FIXME("\n");
-	return 0;
-}
 
 /******************************************************************************
- *  RtlCopyMemory   [NTDLL]
- *
+ *  RtlInitializeGenericTable           [NTDLL.@]
  */
-#undef RtlCopyMemory
-VOID WINAPI RtlCopyMemory( VOID *Destination, CONST VOID *Source, SIZE_T Length )
+PVOID WINAPI RtlInitializeGenericTable(PVOID pTable, PVOID arg2, PVOID arg3, PVOID arg4, PVOID arg5)
 {
-    memcpy(Destination, Source, Length);
+  FIXME("(%p,%p,%p,%p,%p) stub!\n", pTable, arg2, arg3, arg4, arg5);
+  return NULL;
 }
 
 /******************************************************************************
  *  RtlMoveMemory   [NTDLL.@]
+ *
+ * Move a block of memory that may overlap.
+ *
+ * PARAMS
+ *  Destination [O] End destination for block
+ *  Source      [O] Where to start copying from
+ *  Length      [I] Number of bytes to copy
+ *
+ * RETURNS
+ *  Nothing.
  */
 #undef RtlMoveMemory
 VOID WINAPI RtlMoveMemory( VOID *Destination, CONST VOID *Source, SIZE_T Length )
@@ -428,6 +481,16 @@ VOID WINAPI RtlMoveMemory( VOID *Destination, CONST VOID *Source, SIZE_T Length
 
 /******************************************************************************
  *  RtlFillMemory   [NTDLL.@]
+ *
+ * Set a block of memory with a value.
+ *
+ * PARAMS
+ *  Destination [O] Block to fill
+ *  Length      [I] Number of bytes to fill
+ *  Fill        [I] Value to set
+ *
+ * RETURNS
+ *  Nothing.
  */
 #undef RtlFillMemory
 VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
@@ -437,6 +500,15 @@ VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
 
 /******************************************************************************
  *  RtlZeroMemory   [NTDLL.@]
+ *
+ * Set a block of memory with 0's.
+ *
+ * PARAMS
+ *  Destination [O] Block to fill
+ *  Length      [I] Number of bytes to fill
+ *
+ * RETURNS
+ *  Nothing.
  */
 #undef RtlZeroMemory
 VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
@@ -446,17 +518,54 @@ VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
 
 /******************************************************************************
  *  RtlCompareMemory   [NTDLL.@]
+ *
+ * Compare one block of memory with another
+ *
+ * PARAMS
+ *  Source1 [I] Source block
+ *  Source2 [I] Block to compare to Source1
+ *  Length  [I] Number of bytes to fill
+ *
+ * RETURNS
+ *  The length of the first byte at which Source1 and Source2 differ, or Length
+ *  if they are the same.
  */
 SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
 {
-    int i;
+    SIZE_T i;
     for(i=0; (i<Length) && (((LPBYTE)Source1)[i]==((LPBYTE)Source2)[i]); i++);
     return i;
 }
 
+/******************************************************************************
+ *  RtlCompareMemoryUlong   [NTDLL.@]
+ *
+ * Compare a block of memory with a value, a ULONG at a time
+ *
+ * PARAMS
+ *  Source1 [I] Source block. This must be ULONG aligned
+ *  Length  [I] Number of bytes to compare. This should be a multiple of 4
+ *  dwVal   [I] Value to compare to
+ *
+ * RETURNS
+ *  The byte position of the first byte at which Source1 is not dwVal.
+ */
+SIZE_T WINAPI RtlCompareMemoryUlong(const ULONG *Source1, SIZE_T Length, ULONG dwVal)
+{
+    SIZE_T i;
+    for(i = 0; i < Length/sizeof(ULONG) && Source1[i] == dwVal; i++);
+    return i * sizeof(ULONG);
+}
+
 /******************************************************************************
  *  RtlAssert                           [NTDLL.@]
  *
+ * Fail a debug assertion.
+ *
+ * RETURNS
+ *  Nothing. This call does not return control to its caller.
+ *
+ * NOTES
  * Not implemented in non-debug versions.
  */
 void WINAPI RtlAssert(LPVOID x1,LPVOID x2,DWORD x3, DWORD x4)
@@ -467,6 +576,17 @@ void WINAPI RtlAssert(LPVOID x1,LPVOID x2,DWORD x3, DWORD x4)
 /******************************************************************************
  *  RtlGetNtVersionNumbers       [NTDLL.@]
  *
+ * Get the version numbers of the run time library.
+ *
+ * PARAMS
+ *  major [O] Destination for the Major version
+ *  minor [O] Destination for the Minor version
+ *  build [O] Destination for the Build version
+ *
+ * RETURNS
+ *  Nothing.
+ *
+ * NOTES
  * Introduced in Windows XP (NT5.1)
  */
 void WINAPI RtlGetNtVersionNumbers(LPDWORD major, LPDWORD minor, LPDWORD build)
@@ -477,7 +597,11 @@ void WINAPI RtlGetNtVersionNumbers(LPDWORD major, LPDWORD minor, LPDWORD build)
 
 	if (major)
 	{
-		*major = versionInfo.dwMajorVersion;
+		/* msvcrt.dll as released with XP Home fails in DLLMain() if the
+		 * major version is not 5. So, we should never set a version < 5 ...
+		 * This makes sense since this call didn't exist before XP anyway.
+		 */
+		*major = versionInfo.dwMajorVersion < 5 ? 5 : versionInfo.dwMajorVersion;
 	}
 
 	if (minor)
@@ -509,6 +633,7 @@ VOID WINAPI RtlFillMemoryUlong(ULONG* lpDest, ULONG ulCount, ULONG ulValue)
 {
   TRACE("(%p,%ld,%ld)\n", lpDest, ulCount, ulValue);
 
+  ulCount /= sizeof(ULONG);
   while(ulCount--)
     *lpDest++ = ulValue;
 }
@@ -529,3 +654,31 @@ DWORD WINAPI RtlGetLongestNtPathLength(void)
   TRACE("()\n");
   return 277;
 }
+
+/*********************************************************************
+ *                  RtlComputeCrc32   [NTDLL.@]
+ *
+ * Calculate the CRC32 checksum of a block of bytes
+ *
+ * PARAMS
+ *  dwInitial [I] Initial CRC value
+ *  pData     [I] Data block
+ *  iLen      [I] Length of the byte block
+ *
+ * RETURNS
+ *  The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
+ */
+DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, PBYTE pData, INT iLen)
+{
+  DWORD crc = ~dwInitial;
+
+  TRACE("(%ld,%p,%d)\n", dwInitial, pData, iLen);
+
+  while (iLen > 0)
+  {
+    crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
+    pData++;
+    iLen--;
+  }
+  return ~crc;
+}
diff --git a/include/winternl.h b/include/winternl.h
index b082d7794a1..809e9fcd1c1 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -897,6 +897,7 @@ void      WINAPI RtlClearBits(PRTL_BITMAP,ULONG,ULONG);
 ULONG     WINAPI RtlCompactHeap(HANDLE,ULONG);
 LONG      WINAPI RtlCompareString(const STRING*,const STRING*,BOOLEAN);
 LONG      WINAPI RtlCompareUnicodeString(const UNICODE_STRING*,const UNICODE_STRING*,BOOLEAN);
+DWORD     WINAPI RtlComputeCrc32(DWORD,PBYTE,INT);
 NTSTATUS  WINAPI RtlConvertSidToUnicodeString(PUNICODE_STRING,PSID,BOOLEAN);
 LONGLONG  WINAPI RtlConvertLongToLargeInteger(LONG);
 ULONGLONG WINAPI RtlConvertUlongToLargeInteger(ULONG);
@@ -916,6 +917,7 @@ DWORD     WINAPI RtlDeleteSecurityObject(DWORD);
 DWORD     WINAPI RtlDestroyEnvironment(DWORD);
 HANDLE    WINAPI RtlDestroyHeap(HANDLE);
 BOOLEAN   WINAPI RtlDosPathNameToNtPathName_U(LPWSTR,PUNICODE_STRING,DWORD,DWORD);
+WCHAR     WINAPI RtlDowncaseUnicodeChar(WCHAR);
 void      WINAPI RtlDumpResource(LPRTL_RWLOCK);
 
 LONGLONG  WINAPI RtlEnlargedIntegerMultiply(INT,INT);
@@ -923,6 +925,8 @@ ULONGLONG WINAPI RtlEnlargedUnsignedMultiply(UINT,UINT);
 UINT      WINAPI RtlEnlargedUnsignedDivide(ULONGLONG,UINT,UINT *);
 NTSTATUS  WINAPI RtlEnterCriticalSection(RTL_CRITICAL_SECTION *);
 void      WINAPI RtlEraseUnicodeString(UNICODE_STRING*);
+NTSTATUS  WINAPI RtlEqualComputerName(const UNICODE_STRING*,const UNICODE_STRING*);
+NTSTATUS  WINAPI RtlEqualDomainName(const UNICODE_STRING*,const UNICODE_STRING*);
 BOOL      WINAPI RtlEqualPrefixSid(PSID,PSID);
 BOOL      WINAPI RtlEqualSid(PSID,PSID);
 BOOLEAN   WINAPI RtlEqualString(const STRING*,const STRING*,BOOLEAN);