My project generates a dll and when build in Debug mode the dll gets registered automatically by Visual Studio 2005. But when I try to register the same dll in command promp
I just had the same issue.
If you're running 64-bit Windows and you've placed the 32-bit DLL in Windows\System32\ then it'll give you this error.
Simply place the DLL into Windows\SysWOW64\ and register it from there.
Here's where I found the fix:
http://csi-windows.com/blog/all/73-windows-64-bit/378-fixing-qregsvr32-the-module-failed-to-load-the-specified-module-could-not-be-foundq