what card was it?
7600GT
$ lspci | grep VGA
01:00.0 VGA compatible controller: nVidia Corporation G73 [GeForce 7600 GT] (rev a1)
I am now successfully running it on windows on my main box on my 9800GT via GUIMiner - although I am getting once cpu maxed out on poclbm.exe which doesn't seem right.