Hello guy/gals, I am currently running XP pro 32bit OS. I know have Windows 7 ultimate 64bit and 32bit. I can't remember how to get my system's list of what my computer has to post here.

Basically, my computer is a gaming computer that I usually just play COD series, burn music, movies..et. I have talked with few about 7 and they all say its pretty soild OS. I just want some experts on this matter. Thanks

Windows 7 32 bit is the easiest to install as there could be driver problems with some older hardware with the 64 bit version and it all depends if your MoBo can cope with 64 bit as well.. If you have 4Gb memory or more and a 64 bit capapble processor with compliant MoBo then you could always try the 64 bit version to see how it goes.