I cannot use any 3d/2d programs because Direct 3D Fails all three tests and it says something about not being able to use DxDiag's Hardware acceleration!!So I cannot play halo or warcraft III or any other game! Please help as soon as possible.

Start -> Run -> DxDiag

Go to Display tab, and confirm all enabled

You can also download and re-install DirectX 9.0c again from HERE (http://www.microsoft.com/downloads/details.aspx?FamilyID=9226a611-62fe-4f61-aba1-914185249413&DisplayLang=en)