Just to let you know, Windows 64 bit is not compatible with 16bit games and alot of programs. If I were you, I would just stick to normal (32 bit) XP until the 64bit version of it is properly examined and tested, so most of it's major flaws can be fixed. Although if you are just experimenting with it go ahead. 64 bit is not a gamer's friend though.
::-Chase-::