Question about xrMPE multiplayer mode

[Shinigami]

Hi all

So I was able to get hold of this mod and before I start testing things, I was wondering about the rules for setting this up. Perhaps someone here can help me if they've done this?

1) Do I need a third PC to run a multiplayer server (for a two player game), or can I run as an active player on the same PC running the server?
2) Can this run on a private LAN, like just by providing the IP of the PC hosting the server if all players are in the same room, or does this need to be published to the Internet?
3) What happens to saved games, is it the server PC that hosts the saves, or do all individual players need to save so they can connect to the server and have their last gear?
4) I have a spare machine, and a friend has a copy of the game and I was thinking of inviting him over. But before this, I wanted to test all of it, and need some advice on running the second copy on 2 or 3 PCs (third one being a server if required), but running the exe without Steam open doesn't start the game. Anyway around this? If this is against the TOS of the board, Admins may delete this message and I'll just buy another copy for my spare Steam account (it's not very expensive but if I can avoid that as my buddy has a copy, then all the better).

Cheers