As you've suggested, it's a very old graphics card that isn't supported. I'm getting another computer within the week which I'll be trying Knoppix and a few other distros on, so I'm not going to pursue the 486 anymore. I was just anxious to see how Knoppix looked and worked, and being new to open source, I didn't know what was happening when it stopped.

Thanks for the replies. I'm sure I'll have more questions in the near future. And thanks for the very useful link, tommydl, I saved it for future reference.



Edit: By the way, the card is Trident Super VGA if than means anything (I don't know the model and not willing to go into the box to find out since I'm getting another comp soon).