Holy Fuck this is awesome
I'm trying out windows 7 on my old laptop right this second, its actually working quite well its definitely using less battery and the ram usage seem on par with my rapidly decaying XP install too. it definately snappyer to
If i was remotely usefull (how ever unlikey that maybe) feel free to click the thanks button or share some rep.
THE BEST METHOD to run PSX games (and everything else for that matter) is via Retroarch - http://buildbot.libretro.com/nightly/
If you have any questions on how to set it up on Windows please feel free to ask, its very easy.