Newbs server help with Arma2

[boomish 10]

were a clan that has just found Arma 2, and I just wondered if anyone can gie usa few basic pointers no how best to setup the server?

First off it's an a amazing game but the learning curve is pretty steep , buggy and quite ilogical at times.

Were quite into getting some coop games going but like this afernoon when two of us were testing out the new server we just got finding a mission that we could do was quite hard , not many have the AI enabled, I presume we can enable that just not sure of the command yet.

Any suggestions for good links or downloads of coop missions we can load or simple things to set, as I say were new to this game and still running round working our how to buy units weapons etc if one of us can get good at it at least we can teach the others.

Thanks for any help..