I have a problem trying to adjust brightness or any other graphics function in COD2 multi. Was running fine before upgraded to an ASUS m/b and Celeron 3.3ghz. Vid card is a Radeon 9600 PRO 256mb. Have 1gb RAM. It's not spyware or other software conflict. Downloaded a fix prior to doing an upgrade but cant seem to get it right this time. Any ideas.