[AmEr M]

sweets_hsn what tiger said is right i have a network and im an internet distributer i didnt think ur provider can do for ur pc as he did on his labtop but u can do a trick in some network cards it work well
first copy the mac of the network card that is working on internet
then go to the second network card
properties >> configure >> advanced >> Locally administrated address >> and in the value field paste the mac without space or "-" or ":"
try it in some network card it works well