I am facing a very big problem while playing Rainbow Six 2 Running, my half screens get white, what should i do please help me,

i have AMD X2 3800+, 2GB RAM, Nvidia Gforce 8500GT.

Try updating the video drivers for your card.
Be sure to remove your old drivers first.
http://www.nvidia.com/object/winxp_169.21_whql.html

If that doesn't work .. try updating Direct X drivers.
http://www.microsoft.com/downloads/details.aspx?FamilyI...d1a91&DisplayLang=en