"....not enough disk space to erase temp fils. and to create a device map".
How big is your partition? Knoppix absolute minimum is about 2.4 Gig. You should really use 3.5 or more if you have it..
For the winmodem, see these:
http://www.knoppix.net/forum/viewtopic.php?t=14796
http://www.knoppix.net/forum/viewtopic.php?t=12119