I have added a basic init.txt file in the download area that you can download. It has all the basic halo maps listed to play for a dedicated server and i have them running with slayer, ctf, and teamslayer. This way you can add more maps if you want and modify it and this will get you started. If you have any questions, look at my write ups for more commands to add like the rcon since I do not have it added to the init.txt file. If you have any questions just post here in the message board, so me and other members can help you out.
Thanks,
Guardian