diff --git a/dlls/msacm/driver.c b/dlls/msacm/driver.c
index 302cfee39ae..43562733f70 100644
--- a/dlls/msacm/driver.c
+++ b/dlls/msacm/driver.c
@@ -49,6 +49,10 @@ WINE_DEFAULT_DEBUG_CHANNEL(msacm);
 MMRESULT WINAPI acmDriverAddA(PHACMDRIVERID phadid, HINSTANCE hinstModule,
 			      LPARAM lParam, DWORD dwPriority, DWORD fdwAdd)
 {
+    MMRESULT resultW;
+    WCHAR * driverW = NULL;
+    LPARAM lParamW = lParam;
+
     TRACE("(%p, %p, %08lx, %08lx, %08lx)\n",
           phadid, hinstModule, lParam, dwPriority, fdwAdd);
 
@@ -72,30 +76,95 @@ MMRESULT WINAPI acmDriverAddA(PHACMDRIVERID phadid, HINSTANCE hinstModule,
 	return MMSYSERR_INVALFLAG;
     }
 
-    /* FIXME: in fact, should GetModuleFileName(hinstModule) and do a
-     * LoadDriver on it, to be sure we can call SendDriverMessage on the
-     * hDrvr handle.
-     */
-    *phadid = (HACMDRIVERID) MSACM_RegisterDriver(NULL, NULL, hinstModule);
+    /* A->W translation of name */
+    if ((fdwAdd & ACM_DRIVERADDF_TYPEMASK) == ACM_DRIVERADDF_NAME) {
+        unsigned long len;
+        
+        if (lParam == 0) return MMSYSERR_INVALPARAM;
+        len = MultiByteToWideChar(CP_ACP, 0, (LPSTR)lParam, -1, NULL, 0);
+        driverW = HeapAlloc(MSACM_hHeap, 0, len * sizeof(WCHAR));
+        if (!driverW) return MMSYSERR_NOMEM;
+        MultiByteToWideChar(CP_ACP, 0, (LPSTR)lParam, -1, driverW, len);
+        lParamW = (LPARAM)driverW;
+    }
 
-    /* FIXME: lParam, dwPriority and fdwAdd ignored */
-
-    return MMSYSERR_NOERROR;
+    resultW = acmDriverAddW(phadid, hinstModule, lParamW, dwPriority, fdwAdd);
+    HeapFree(MSACM_hHeap, 0, driverW);
+    return resultW;
 }
 
 /***********************************************************************
  *           acmDriverAddW (MSACM32.@)
- * FIXME
- *   Not implemented
+ *
  */
 MMRESULT WINAPI acmDriverAddW(PHACMDRIVERID phadid, HINSTANCE hinstModule,
 			      LPARAM lParam, DWORD dwPriority, DWORD fdwAdd)
 {
-    FIXME("(%p, %p, %ld, %ld, %ld): stub\n",
-	  phadid, hinstModule, lParam, dwPriority, fdwAdd);
+    TRACE("(%p, %p, %08lx, %08lx, %08lx)\n",
+          phadid, hinstModule, lParam, dwPriority, fdwAdd);
 
-    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-    return MMSYSERR_ERROR;
+    if (!phadid) {
+        WARN("invalid parameter\n");
+	return MMSYSERR_INVALPARAM;
+    }
+
+    /* Check if any unknown flags */
+    if (fdwAdd &
+	~(ACM_DRIVERADDF_FUNCTION|ACM_DRIVERADDF_NOTIFYHWND|
+	  ACM_DRIVERADDF_GLOBAL)) {
+        WARN("invalid flag\n");
+	return MMSYSERR_INVALFLAG;
+    }
+ 
+    /* Check if any incompatible flags */
+    if ((fdwAdd & ACM_DRIVERADDF_FUNCTION) &&
+	(fdwAdd & ACM_DRIVERADDF_NOTIFYHWND)) {
+        WARN("invalid flag\n");
+	return MMSYSERR_INVALFLAG;
+    }
+
+    switch (fdwAdd & ACM_DRIVERADDF_TYPEMASK) {
+    case ACM_DRIVERADDF_NAME:
+        /*
+                hInstModule     (unused)
+                lParam          name of value in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32
+                dwPriority      (unused, set to 0)
+         */
+        *phadid = (HACMDRIVERID) MSACM_RegisterDriverFromRegistry((LPCWSTR)lParam);        
+        if (!*phadid) {
+            ERR("Unable to register driver via ACM_DRIVERADDF_NAME\n");
+            return MMSYSERR_INVALPARAM;
+        }
+        break;
+    case ACM_DRIVERADDF_FUNCTION:
+        /*
+                hInstModule     Handle of module which contains driver entry proc
+                lParam          Driver function address
+                dwPriority      (unused, set to 0)
+         */
+        fdwAdd &= ~ACM_DRIVERADDF_TYPEMASK;
+
+        *phadid = 0;
+        FIXME("(%p, %p, %ld, %ld, %ld): ACM_DRIVERADDF_FUNCTION: stub\n", phadid, hinstModule, lParam, dwPriority, fdwAdd);
+        SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+        return MMSYSERR_ERROR;
+    case ACM_DRIVERADDF_NOTIFYHWND:
+        /*
+                hInstModule     (unused)
+                lParam          Handle of notification window
+                dwPriority      Window message to send for notification broadcasts
+         */
+        *phadid = 0;
+        FIXME("(%p, %p, %ld, %ld, %ld): ACM_DRIVERADDF_NOTIFYHWND: stub\n", phadid, hinstModule, lParam, dwPriority, fdwAdd);
+        SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+        return MMSYSERR_ERROR;
+    default:
+        ERR("invalid flag value 0x%08lx for fdwAdd\n", fdwAdd & ACM_DRIVERADDF_TYPEMASK);
+        return MMSYSERR_INVALFLAG;
+    }
+
+    MSACM_BroadcastNotification();
+    return MMSYSERR_NOERROR;
 }
 
 /***********************************************************************
diff --git a/dlls/msacm/internal.c b/dlls/msacm/internal.c
index a5eb350991f..b83f6324e3a 100644
--- a/dlls/msacm/internal.c
+++ b/dlls/msacm/internal.c
@@ -51,6 +51,43 @@ static BOOL MSACM_pendingBroadcast = FALSE;
 
 static void MSACM_ReorderDriversByPriority(void);
 
+/***********************************************************************
+ *           MSACM_RegisterDriverFromRegistry()
+ */
+PWINE_ACMDRIVERID MSACM_RegisterDriverFromRegistry(LPCWSTR pszRegEntry)
+{
+    static const WCHAR msacmW[] = {'M','S','A','C','M','.'};
+    static const WCHAR drvkey[] = {'S','o','f','t','w','a','r','e','\\',
+				   'M','i','c','r','o','s','o','f','t','\\',
+				   'W','i','n','d','o','w','s',' ','N','T','\\',
+				   'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
+				   'D','r','i','v','e','r','s','3','2','\0'};
+    WCHAR buf[2048];
+    DWORD bufLen, lRet;
+    HKEY hKey;
+    PWINE_ACMDRIVERID padid = NULL;
+    
+    /* The requested registry entry must have the format msacm.XXXXX in order to
+       be recognized in any future sessions of msacm
+     */
+    if (0 == strncmpiW(buf, msacmW, sizeof(msacmW)/sizeof(WCHAR))) {
+        lRet = RegOpenKeyExW(HKEY_LOCAL_MACHINE, drvkey, 0, KEY_QUERY_VALUE, &hKey);
+        if (lRet != ERROR_SUCCESS) {
+            WARN("unable to open registry key - 0x%08lx\n", lRet);
+        } else {
+            bufLen = sizeof(buf);
+            lRet = RegQueryValueExW(hKey, pszRegEntry, NULL, NULL, (LPBYTE)buf, &bufLen);
+            if (lRet != ERROR_SUCCESS) {
+                WARN("unable to query requested subkey %s - 0x%08lx\n", debugstr_w(pszRegEntry), lRet);
+            } else {
+                MSACM_RegisterDriver(pszRegEntry, buf, 0);
+            }
+            RegCloseKey( hKey );
+        }
+    }
+    return padid;
+}
+
 #if 0
 /***********************************************************************
  *           MSACM_DumpCache
diff --git a/dlls/msacm/wineacm.h b/dlls/msacm/wineacm.h
index 0a3af41da77..e9b9247d98e 100644
--- a/dlls/msacm/wineacm.h
+++ b/dlls/msacm/wineacm.h
@@ -354,6 +354,8 @@ extern void MSACM_BroadcastNotification(void);
 extern void MSACM_DisableNotifications(void);
 extern void MSACM_EnableNotifications(void);
 
+extern PWINE_ACMDRIVERID MSACM_RegisterDriverFromRegistry(LPCWSTR pszRegEntry);
+
 /* From msacm32.c */
 extern HINSTANCE MSACM_hInstance32;