- last post: 01.01.0001 12:00 AM PDT
If you mean a Usermap for Halo3 Consider the following
1.Put it in your fileshare
2.Tag your file
3.Wait for people to download and there you go :)
If you mean on Halo 2 Pc Consider the following:
1.Halomaps.org Allows map submissions
2.Any site that plays or talks about halo2 Pc might let you upload it?