Brighten Ships: illuminates ships evenly, instead of allowing you to hide in shadows
Accurate Collisions: eats up processor time computing more accurate collisions; only use on a fast connection (i.e., not the Internet!)
Smooth Rotation: uses extra computing power to calculate a smooth roll (might as well use it if you can!)
Server Firing: server controls firing calculations, increasing the chances that shots which appear to hit your opponents actually do
Mouse Look: inverts mouse settings (for you odd ducks out there ;-)
Peer to Peer: use only if everyone is connected at the same speed, increases player updates in ideal situations
Remote Control Console: allows players to alter/control the console (server) commands on the fly; you shouldn't need to adjust the port settings in most situations
Just check off which weapons and/or powerups you DO NOT want to be available during game play.
Just type in a message that you would like displayed when people enter the game!