Free download dxdiag 8

DXDIAG(DirectX Diagnostics) comes with DirectX. As long as any version of DX is installed. Just type "dxdiag" in the run bar under start -> run(for xp)

For vista if you have run enabled use that, if not you can be lazy and make a shortut to dxdiag. you do not even need a location, windows will do that for you.