So if people wanna be prepared to play and you don't already have this game, what you need is...
1) The ability to play HL1 mods.
2) Go here.... http://www.svencoop.com/files.php
3) Download "Sven Co-op v4.0", click the Mirror List and select on, any will do. It's 409mb, so it's best to get it downloaded now
4) on that files page, download....
- SC3.0 Map Pack
- Classic Map Pack
- SC4 Player Model Pack
- Optional Map Pack
There's more stuff, but these are the main ones you want, others are optional and if ppl enjoy playing it, we can get some of the full game campaign type ones to play another time. You really want the Player model pack though, cos has some fun models for people to be

Ok, got all them, install it, then add the map files to the map folder, player models to the relevent folders, and your away

Dunno how many players neds server will support, but should be enough to get plenty of cic playing together for some classic gaming

