I think at the boot prompt you should be able to enter: knoppix vesa, (resolution desired). I do not know that the resolution you desire is possible though with the standard vesa driver. If you know the video chipset you may be able to specify it instead of vesa. You should be able to go to /etc/sysconfig/xserver and view what driver is used. Again if you have vesa you may not get the resolution you want, I simply don't know its limitation. If you have a driver that is for the chipset or one from the same company you can edit your /etc/x11/xf86config file and under the section labeled under "standard server" you wil find resolutions listed. Add the resolution you want to the front of the list. Save the file and restart, if it can't do the resolution it will move on to the next in the list automaticaly.

As for the wlan card I have had no luck with them. if the Knoppix wlan tool on the knoppix menu item does not recognize the card you may be screwed unless you can find someone with the same card and linux hack knowhow to assist you. Otherwise there are tools out there for loading windows drivers in linux and they work, so I'm told. The only problem is that they require kernel 2.4.2 or lower to run. I couldn't get ndiswrpper or linuxant driver loader to work on mine and I figured that it was the kernel.

I wish you luck on your issues.