I already run Vista RC1 and RC2 but the speed was really slow as soon I installed my programs (anti-virus, Firefox, Thunderbird...), I've tried the Beta1 and there I was able to see some Aero effects and it worked like a charm, but not in the RC1 and RC2, the drivers of my video card is not supported anymore and I'm stuck with the WDDM made by Microsoft, and therefore, I can't install any of my games that run fine with Windows XP, is there any danger on forcing installation of drivers made for an other video card, I know its not the best, but at least I would be able to run my games with DirectX 9 and the effects supported by my video card. I would bet if I force drivers made for a 9550, that could work, but I don't wanna risk my card. My question is simple, what can I remove to add speed to Vista, I don't need aero effects at all, just at least themes like in XP will be perfect.