If you are developing ActiveX components, you truly know that "REGSVR32.EXE" isn't the most luxurious program available.
Xteq COM Register Extension makes it much more easier:
It's an extension for the Windows Explorer, simply right-click an OCX, DLL or EXE file and select "Register ..." or "Unregister ..." from the menu. This will either register or unregister the selected component from the registry.
Forget REGSVR32.EXE forever!