check the video card control panel see if it a v-sink setting with the card or the game v-sink. setting. some older games used to lock the v-sink and it causes flickering on some games and monitors because it locked at 59-57 frames and some people can see the flickers. sett if the game help fourm has a line setting to unlock the frame rate to max.
V-Sync or V-sink, if it's a sink, then let me know how do I get to that option. And I just raise the hertz to 75 by using AMD Vision Control Center, hope that done no harm on my card and monitor, I have another question, just found this out actually, I have DVI-D plug on the back of my LG Flatron W2061TQ monitor 20" should I just get the cord so I don't have to use DVI to VGA using adapter for VGA, should this help with flickering?