One more suggestion. I had a similar problem with a Diamond video card when it was set to 75Hz refresh rate. By changing it to 72Hz, the problem went away. I went through a power supply and a video card replacement before I discovered the problem. This showed up only when the video card heated up, thus it was not initially clear that the refresh rate would fix it. Peter Shkabara ____________________________ [log in to unmask] http://pesh.what.cc -----Original Message----- Lisa says, > Images on my monitor screen are undulating just slightly..... ---Dan Hughes I had a similar problem, and I found out that when I unplugged a small fan near the computer the problem was solved. (Not a computer fan--a fan The NOSPIN Group Promotions is now offering special "Free-After-Rebate" Software specials in conjunction with Beyond.com. We have new offers all the time!!! http://nospin.com/promotions