Rip, there is also a new patch that includes an in-game browser for multiplayer.
As for it being 'doom', if you are interested, I can post some brief instructions on how to modify your game so that all the weapons do more realistic damage.
Udie - there ARE servers that run multiplayer realism mods, but they seem to be pretty hard to find, and I never have a good ping to them.
The best I've found are some SMG/Rifle only servers. The rifles will pretty much put someone down with one good hit.