Windows 7 64 bit to 32 conversion

You need to do a clean install of the 32-bit OS. You can do this on the hard drive that holds your existing 64-bit system by choosing to do a "custom install". The old 64-bit system will end up in a folder called "Windows.Old". You'll also have to reinstall all the other programs.

Just out of interest: Why do you want to go from 64 to 32bit?

NOT support your games?