Hi! Success! (well, almost)

Trying to run a new Out of Range monitor, I coudn't lower screen resolution when booting from the hard drive. Booted from the CD and the "knoppix screen=*" command worked fine from the boot prompt.

So the big question is, How do I save this screen resolution setting to the HD?

I *think* the procedure goes like this:
open Konsole from CD boot
change directories to the appropriate hda1 config file
edit file
be happy

Please help with the exact commands, because I don't want to go in and screw everything up.