I just downloaded the original Halo, installed it, and everything works fine except that when I try to join a game online, I keep getting some retarded message saying I need administrator permission to download required patch. I googled it and apparently, I need a crack? of some sort to play online. Where do I get the crack and what do I have to do? I only wanted it to play online, because I already have the game for Xbox but the Xbox version isn't Live capable. Help?