I did that and it has the same problem
-Downloaded the 500+ package-
could it be that when I run dxdiag under the display tab
It Marks, "AGP Texture Accelaration: Not Available"
I have no clue on how to fix this im willing to say its not the game, because like I said it runs fine on my bros comp he has an ATI 9600 Pro(I know its old)...
Ill put some images of the options for my graphics card lays down for me
anyways any in comming tips would be greatly appreciated.