Depends on the game you're trying to play. 32 bit has been around longer, so it's more stable for more games, and older games, and more stable in general. 64 bit is better for more newer games, as it's the top of the line at the moment.
Though, couldn't you just run the game in compatibility mode...
nyan :3 Youtube Channel i sometimes post videos of other games
The day that I can play this grows nearer, how exactly does the -city- systems work? All I know is that 100 people can be on at once, iirc. What -city- would I go to if I wanted to play with you guys?