Hi everyone, I am a complete newbe to multiplayer flying and i haven't a clue what to do, where to go, or how to do it.  can anyone help a deperate FS98 flyer? Thanks

Yes, many times, but i haven't yet got a good enough pc to run it!

You can join that Enterprise guy the next time he's flying (he's posted invitations here before). Why don't you make an appointment on an IRC channel to set up the connection? Myself I may be joining you some time if you do.
PS: I realize now that maybe you need some hint about the whole process. Basically one of the players will act like a server (hopefully with a fast enough computer and connection) and provide his IP address to other players; the other players will connect to that IP address and share the simulated world. You will decide to start at a specific airport just to make sure you're close to each other. I already have to try this myself with FS98. I think that at least 3 or 4 players should be able to play with no problems.