USB Cable Connection to Motorola 4100

Greetings: I have connected a usb port to a Motorola 4100. I have YaST->network devices->network card to configured on SuSE v9.0 32 athlon. The card shows as: eth-usb-1 Ethernet DHCP. The computer is connected to a local network through eth0. Under Hardware Details, the network device shows as eth-usb 1 (second "-" missing) with no module name or options specified. Device doesn't show from ifconfig. Ifconfig eth-usb-1 can not find device. Any help would be greatly appreciated. Thanks.