Iphone Tunnel Suite is not for iphone. It is for Windows.
The most awesome part of this package is iTunnel.exe which does the trick of tunneling over the port 22.
The above implementation is only a small part of iTunnel real power. It is possible now on to arrange not only winscp access to the phone from Windows over USB cable.
With some ssh knowledge you can:
1) tether your PC to the Internet over GPRS/EDGE by USB cable!
2) connect your iphone to LAN-connected PC and get the Internet to iphone from the PC.
How come?
I can only give a links to manuals in Russian only. They contain basic how-to info and some screenshots which may be enough for you to catch the idea. The English version will be prepared later.
You need to have iTunes and .Net Framework 3.5 installed on the PC.
http://ironphone.ru/faq/452/ - How to tether your PC with iphone over USB cable
http://ironphone.ru/faq/510/ - How to connect iphone to the Internet over USB cable thru the http-proxy installed on the PC (you can use privoxy instead of ccproxy mentioned in the article).