I have a choice of Windows 7 Home 64 Bit, which was on the computer when i bought it from Dell, or Windows 7 Professiona 32 bit. I did have Windows 7 Home 64 Bit installed, and everything worked fine until I got some crap on the computer that I can't get rid of. So I plan to format and reinstall either the Home version 64 bit, or Professional 32 bit. Suggestions please, Thanks, Mike