Hi everyone,have aiw radeon 32 mb card agp 4x in my p4 1.8,768 ram.xp pro. my setting is 800x600 but when the TV tuner is turned on,it changes to 640x480. after resetting again to 800x600 it works fine,until i turn the TV off,so when going back to TV later,the story repeats.what can i do,as i...