I have been using Knoppix 3.7 with great success. It finds all my hardware including my motorola surfboard usb cable modem without any configuing.
I tried Knoppix 3.8.2 and there is no connection to the modem and hence to the internet.
Since this modem is neither a dial up connection nor a network card I cannot see how to get it working. The modem is on a 24/7 connection to my ISP.
Any help would be greatly appreciated.