haha phreak...didnt even answer the man's question. Yeah bro, you'll use an FTP client to gain access to your xbox. Once you in there, you will have to navigate to your h2 maps that are on the hdd. Then from there you will have to transfer them to your pc, do your modifications, then transfer them back overwritting the ones on the hdd. *MAKE SURE YOU MAKE BACKUPS THO!* If you want tutorials on how to ftp to your halo 2 maps, check out www.se7en-sins.tk You should find ppfs there also ify ou are lacking them; ppf's are small files that are applied to maps via ppf-o-matic 3 which applies the mods, that others made, to your map. You can also learn how to mod there.
Sure. You can go to www.savefile.com if you want to upload it there. Then you can give the link at se7en-sins People are always looking for ppf's