A computer I helped pick out for my cousins a couple of weeks ago, won't run GTR2, XMEN3. Xmen 3 said I needed to accelerate my direct3D, which I don't know how to do on vista, so I right clicked it and set compatibility to Windows XP SP2, now it says I need to put in the right CD. For GTR2 it loads and at the screen where its done loading the map and all, and has the drive button, it really laggy and freezes there. Is it software problem or is it because the computer is too slow to run the games. OS: Windows Vista RAM:512MB Processor: Intel P4 3.20GHZ GC: Intel 64MB Anything to stop the lag, work the games?