I'm using the P8P67 Deluxe and when I install an ATI Firepro V4800 Video Card my D-Link nic disappears from Device Manager and I can't connect to the network. If I install a Nvidia 9500 GT everything is fine and my NIC returns to Device Manager and my network access has returned.

Any suggestions. It appears to be a conflict, maybe IRQ but I have no clue how to fix it.

Thanks in advance,