I don't think your current programs would run any better, with winxp 64, unless you got the 64 bit versions of the programs. I've been running vista64, with 8 gig of RAM and haven't had any problems, at all running any programs. All my steam games work, Warhammer online, etc.. all work fine for me. I'd just wait until…
The good thing about having a boatload of ram on an 64 bit system is that you can run multiple apps without major slowdowns from paging(have enough ram etc). So even if your 32 bits apps can only take up like 3 gigs, if you've got 8 gigs you can have a few apps running maxed out without noticable slowdown. This is where…