Ok...first have you tried uninstalling it, doing a search in windows for any folders left behind, then ran regedit to look in the registry?  If not there is one other thing to try. This has been a miracle fix for me, for I was in the same boot as you a few years back with Kingpin.  I ran Glsetup and it fixed it!   Go to 
http://www.glsetup.com  download the most recent version of Open GL and run it.  It will clean out older Opengl files updating them with new ones.  I REALLY think this could work.  First make sure ALL traces of the game are gone from your HD, then run GL setup, then reinstall.  I REALLY hope it works for you man I know how you feel...let me know, I will check back in a while.  GL
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