I dunno if this was mentioned, but if someone wants to use t-mobile in the USA with something like this, they can try to get t-mobile total internet with VPN, which they do not NAT.

ex:
http://wiki.howardforums.com/index.p...ernet_with_VPN

or there may be a way to do a socks proxy, and socksify the app... or do an SSH tunnel. As long as they give you a hole somewhere to shove those packets through, you can make it work!