As far as lan parties go the specs are below. This is from their website which cna be reached at http://www.blizzard.com/starcraft/
"Multiplayer games for up to 8 players over IPX Networks and Battle.netŪ, 4 players with Direct Cable Connection, and 2 players with Modem Connection."
I have always played with 8 people via battle.net and it was awesome. I can't seem to connect now though, thats the problem. I have played a private game also over battlenet and it is just as fun. I would recommend the game.