suddenly dead ethernet card

[Vince Venero]

My girlfriend has an 800mhz iMac, circa May 2002.  Not sure of the 
exact revision code.  But anyways, she has been using is sucesfully on 
an apartment LAN for 9 months.  Recently, the lost connection to the 
network and internet.  A look in the network pref pane shows that no ip 
address was received from the DHCP server nor was a 169. class address 
self assigned.

This is very strange and it has completely halted all ethernet 
connectivity of the iMac.

I have tried repair disk permissions and ran fsck.  As a last attempt I 
even reinstalled jaguar last night.  Still no change.  We even moved to 
another network (one at my apartment).  Still no change.  I reset the 
PRAM also.... no change.  Opening up the network utility and showing 
the en0 deivce (ethernet), the link status is always inactive....

Can anyone offer some advice or has the ethernet card gone belly up in 
this iMac.  It really cant be software related anymore as the new OS 
should have eliminated that problem.

Thanks,
Vince