You already know I'm new to this, so... I just established a LAN between two pcs at home using ethernet and hub. The pcs recognize each other and will share files and I have even been able to run small applications that are installed on one pc from the other pc that does not have the application installed. Question now is: can I install Halo (or any other multiplayer game) on just one computer and play multiplayer on the LAN (all offline) or do I need to install the game on both machines? Thanks.