- last post: 01.01.0001 12:00 AM PDT
First off, are you aware of what file type you were downloading? Are they RAR files or ZIP files? It never hurts to provide that kind of information when posting. Either way, they're likely to be compressed. Close Halo CE before adding new maps to your game or else the new maps wont show up until the next time you run CE. Assuming you have the correct program on your machine to uncompress the .zip or .rar files, unzip the maps into your C:\Program Files\Microsoft Games\Halo Custom Edition\Maps folder.
To test whether this has worked or not, fire up Halo CE, enter multiplayer, start a LAN game, browse down the list of maps all the way to the bottom. The custom maps will be listed below the "classic" maps.
If you have any further questions, don't hesitate to ask. And be sure to tell your friends about Halo CE, too! :)