You can't use regsvr32 if the DLL is not an Active-X DLL. Quite a few DLLs are not active-x DLLs and don't have to be registered. All you have to do is make sure that the DLLs in question are in a place that can be found by your application (usually in the same directory as the application or in a Windows System directory). This is true whether you're using Windows 95, 98, NT, 2000, XP whatever.