redlike

During the game large flashing polygons appear on screen, making it unplayable: <object width="425" height="344"><param name="movie" value="http://www.youtube.com/watch?v=1SitcAf48zA&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/watch?v=1SitcAf48zA&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object> I have an older PC but it plays all other recent games (Conflict, COD4/5, Crysis, Far Cry, etc.) without issues. Pentium 4 3GHz 4GB RAM ATI Radeon X1950 Pro I have the latest service packs and video drivers. I tried various video quality settings but the result is always the same. Any ideas on how to resolve this? Thanks!