Sharing Connections (t-dsl via satallite)

Ok all, ready for a FUN ONE?!?!? I am running an XP machine with an Internal DVB card, an external modem, and internal network card hooked up to a belkin router. My internet service is t-com via satallite (germany).

Basically, I get an IP address via dialup connection, and another for the technisat connection via the satallite and ANOTHER connection for my home network. I want this machine to "host" the internet connection for all my other machines. After a wee bit of work, my XP host machine now "see's" and can communicate with all my vista machines and visa versa.

Here is the problem. I can share my dialup connection OR my technisat connection, but not both. ALSO, the host machine has a wierd proxy setup that came from deutch telekom (i got it to work, but cant understand a word of it) that gets the "sending" connection to work with the "listen" connection. Anyone have any idea's of how to get this proxy set up, or a work around for the other machines? I think I have to either set up a new proxy on this machine so that it will "link" to the router, but i have NO CLUE on how to do this!

Feel free to bug me if I didnt make any sense here, or you need more info!

Thanks!