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
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-----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

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