Low-Profile Video Cards?

Catherine Ellerman asks: "I'm after a couple of REALLY low-profile video cards to put in a firewall/router. Motherboards with built in video and networking are available but the reason why I don't really want to go out and buy a new motherboard is because a lot of the processing power would be wasted. Back in my parts store I've a couple of 120Mhz Pentium motherboards that will do the job nicely and a friend of mine helped me source the low-profile NICs (at just over an inch high they're hardly noticeable). All I need now is someone to help me find a couple of low-profile video cards and get the bugs out of the latest kernel."