Video card question

[Chuck Young]

I want to build a firewall on a 486, but I have no monitor and plan to use
telnet from inside to get a connection.

My question is:

Will it hurt the card or motherboard in any way to run it with no monitor
attached?  I know it is a bad thing with audio equipment to run an amp
with no speakers connected, but I am unsure about a VGA card.

I doubt it will boot without a video card, but this interests me too.
Does anyone have any ideas/experiences?

Chuck Young
GTE Internetworking Services