Man, Im goin through the same thing!!!!!
I been lookin for my recovery CD from another computer so I can revert back to windows Xp from vista.
Vista takes up too much memory. I got a 3.3 Ghz processor with a gig of ram. My computer runs "Okay" but nothin special. Now, if this processor and ram was ran with windows xp, my computer would be a whole lot faster.
Not to mention, I got pro tools 7 and it wont work on windows vista.
I recommend, if you can, revert back to xp until vista gets more established.