directx and/or video card help

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hey all

i built a rig for my younger brother to take to college...its basically the same as mine if you look at my sig except he has 1gb ram and the 256mb flavor of video card. hes a computer moron for lack of a better term and has repeatedly borked his system requiring me to fix it. anyway onto the real problem....


he cant open any games since the last format. it gives an error message:

"(Game Title) was unable to start up 3D acceleration. Please make sure DirectX 9.0c is installed and your video drivers are up to date."

well ive installed and reinstalled the video drivers as per the instructions available in the video card forums, and im pretty sure im installing the latest DirectX drivers from microsofts site properly, so what gives? any advice or ideas on what im doing wrong

and if someone could leave exact instructions on where to get the latest DirectX drivers and how to properly install them that'd be great, seeing as microsofts page is a bit thin on instructions...they basically say step 1. download step 2. install....

thanks in advance for all the help