I got an Internet connection from Knoppix live using the UMTS option from the main menu, Preferences. NetworkManager was useless. Indeed, it was telling me that I was disconnected even when I was already on the Net. The UMTS menu option sports dialogs from the fossile Motif library. I do not mind that it is ugly but the text is just tiny fragmented bits. And you have got to know something to get through, no help.