Bit more than cables. You need an internet connections, router, switches, CAT5e or 6 cables, wall-jacks, wireless setups, a building, tables, chairs, computers.
+1 ^ are actually more important that the network setup. Network down, eh. No candy or coffee, you are in big trouble.
Sexy waitresess in short skirts are also mandatory. Maybe some headsets, game servers, lots of spare keyboards and mice. Arcade games, pool table, table tennis.