I just got halo 2 and the game runs like ****. its so slow and hitchy I cant even play it! I have far cry 2 and it runs awsomely with everything turned all the way up so I cant understand why halo 2 wont run. even with all setting all the way down its the same...unplayable. Im running a ATI radeon 4800 on a 2.67ghz pentium computer with 3 g ddr2. windows vista 64bit. any suggestions or help would be appreciated. Also I cant seem to get any e-mail support from anyone...any help?