First of all, I would try a newer version of Knoppix. 3.4 is pretty old and there may have been a few improvements in it since then, especially with hardware detection. I would also be sure that you have enough Ram to boot into a Grapic Environment. 128 Meg is probably not enough. Also a noddc cheatcode may help if it is a monitor issue. You might try a cheatcode such as desktop=icewm or some other similar option.