If you already have the latest version of DirectX it should work ok, you could try to type DXdiag.exe in the run dialog in your start menu to see if there are any errors.
About the openGL, you should browse the site and check it out for yourself... OpenGL is included with my drivers so I haven't installed openGL seperately recently.
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"The pessimist sees difficulty in every opportunity. The optimist sees the opportunity in every difficulty." - Winston Churchill