When I installed Knoppix onto a dual-boot system (Dell Powerserve 600SC) I can only choose 1024x768 as my resolution - I want 800x600. I'm running Window Maker.

When I was running from the CD this wasn't a problem. I've tried kxconfig, and something involving dpkg (I can't remember the entire line). I chose 800x600 as my only resolution and yet when I get to the K login screen, it's 1024x768, and so is Window Maker.