Doom 3 On Windows 7

When i launch doom 3 on windows 7 it starts the first launch screen (the engine, i believe) then it disappears (not present in task manager any longer either) i have already tried: compatability mode for windows xp sp2 and sp3. Doom 3 (non-bfg) fails to launch on windows 7 64bit steamapps, common, doom 3, now right click on the actual game file