Alright here is the issue. I am running windowsXP home edition, using the 2400 HD pro pci card, and i have notice when going into DXDIAG, when i run the D3D7 test, the spinning cube is slow and jerking around, rotating weird. But D3D8 and D3D9 is running smooth, their cubes are spinning normal. So i notice when turning off AGP Texture Acceleration, D3DX7 test the cube is spinning normal like its suppose to be. Now i had this problem with my 6200 PCI card, only difference, i didn't have to turn off AGP Texture Acceleration, the problem was fixed using a different driver. I have tired every driver for the PCI 2400 Card, and the only way to fix the spinning cube is to turn off AGP Texture Acceleration. My question, what is AGP Texture Acceleration and what does it have to do with GPU's? Note: Using a intel motherboard, with 4 pci slots, no agp.