network on solaris 10, through usb port...(urgent)

hi all,

I have been trying to setup network on solaris10 from a long time but am unable to do so..

I tried it with the ethernet card i have(dfe -520tx) but since i was not able to find drivers for that particular device, i thought of using the usb mode to run network..

However am not able to configure it as well..
can anyone pls help..

its kinda urgent.

Thanks