Sever

How easy is it to run a doom deathmatch from my computer? Doom 95 never seems to work. Im asking this because me and the guys on my forums want to play an online tournie.

Forget doom95 and check out some of the deathmatch source ports.
Skulltag and Zdaemon, both have a program to view what servers there is online.
Whatever of those two that suits you best is up to you. Just ask questions, if you get problems. :)

If you guys have good ping to each other there's Legacy too.