thelameduck

there are two computers in my home, one that belongs to me, the other to a family member. The computer that doesn't belong to me has just been reformated, and needs its PCI Ethernet Controller's driver to be reinstalled. I don't know what the name of the card is, so how can i find out so that i can download the driver on my computer and install it so that the other will have internet access? Please help.
thanks