[Demogorgon]

I tried this before but it didn't work too well with my version of xbox. You can use about any ftp client, just type in "free ftp download" in google and something useful should come up. And file management and changing is done from the ftp client on your computer. Evox or some kind of Linux must be running on the xbox at the time though.
If your still confused, look for an xbox ftp tutorial. That's how I learned.