LAN Party at a High School?

Coolnat2004 asks: "I'm a high school student and a member of our technology group. Our school needs extra money for our technology, and I thought that a LAN party would be an effective, and exciting, solution. How can we make a great LAN party with the supplies at hand and make a profit while doing it? We have a network, but not a large enough room with enough ports. We're most likely going to create a detached network for the party, but don't know how to set it up because we have limited supplies. I guess we could seek a sponsorship from a local company, but that is unlikely to happen. Any suggestions on network layout, power layout, and general party to-do's?"