HaloMods "Classic" Read-only Archive

Earlier today, I posted something about how to download other people's maps and playing them on my halo game. I'd strongly apprechiate it if someone just told me because I don't even know anything. I'll learn by people telling me. If you want to tell me to read, forget posting. Please do as I said.

How do I play the maps that all the other people have created?

And, how can i get a program (If needed) to run the maps others have created for me to play?

Help please! I just wana know how I can upload other people's cool maps and play as my own.

Thanks for the help!