I just got a new computer today. a compaq. amd 64 3500+, 1 gb ram, and an onboard ati xpress 200 series. before i got this computer i read online about the xpress 200 series and looked at benchmarks. doom 3 1024x768 high detial got 80 fps. (the test computer was a amd 64 3800, but it isnt too much different than my 3500).. i download the doom 3 demo and it runs really bad. loads fast but in game it runs really bad even on med detail. this isnt the 80fps all these sites it ran at. i downloaded the latest catalyst drivers off the ati site so what gives? am i doing something wrong? it says my frame buffer is 64mb and no matter what i do i cant change it to 128. what is going on? can someone help me?