usbnet not automatic loaded

Hi, i install super suse, but i have a SB4200 cable modem, that was detected but do not loaded the driver ( SB1000 ), i just get into Yast and put the driver manually, but it doesn't work, because the module "usbnet" is not loaded at boot time, now i have to load it manually every time i boot ( modprobe usbnet ), is that a bug ?? can i fix it ?? Please excuse my bad english. -- Marcel Mourguiart