Video problem

I’m hoping that this will sound familiar to someone…

I have a user whose screen is VERY blurry. She said that it’s been this way for about a year, but she didn’t tell me about it because she knew that she created the problem herself and she was embarrassed. She doesn’t remember now exactly what happened, but she said that she thinks she opened a document in Acrobat Reader, something popped on screen asking her if she would like to do something to improve her display, she said “Yes”, then she received a message that her computer was not compatible with those screen settings and everything became blurry.

Windows 2000
Dell Optiplex GX1
PIII 933 MHz

I tried un- and re-installing her video driver. I’ve also tried different refresh rates and display settings.

Has anyone else encountered anything that sounds familiar?