32 bit systems are going to go the way of video tape when DVD came out. If you're getting a new pc, 64 bit is a must IMHO, the amount of RAM you can have with 64 bit makes it a must have on it's own without the other benefits you'll see from it in the next few years!
In my relatively short time here, I've come to respect Steven's [svdl] on pc specs a lot, he really knows what he's talking about!

Injustice will be avenged.
Cofiwch Dryweryn.