Spoof Beagleboard Mac Address for Angstrom

In every college student's lifetime, there will be a point when you
will want to curse at the control over internet at your University and
would want to in anyways possible use the sweet download speed to your
advantage. This time has come for me. My university has a tight hold
over the internet and I am having problems figuring out how Angstrom
can spoof the usb to ethernet MAC address. Everytime I get it, I
can't get my usb ethernet back up. Does anybody know the exact step
by step procedure to spoof the MAC?

Thanks in great appreciation!
-V