Dan,
I have both.... I use the computer as a router and firewall for my
connection ot the internet, and a hub and wireless router on the inside for
parts of my LAN connection to the computer router.
Pros and Cons of using the computer as a router
con: I need an extra box and associated $$ to do it...
(although by
recycling old hardware, you can probably save a lot of $$)
pro: I get to use the MonMotha firewall, ssh and other goodies
on my
router.
Only one IP address on outside interface
Firewall box is separate from the rest of the LAN
Cheers,
Ben