Jiri,
We recently went to broadband DSL, and installed a router.
Following the advice on your tech support files we mapped
1. UDP(20999 to 21005)
2. TCP(1698 to 1708)
Ok, lets see if i can clear this question up for Jiri....
The system is
1 GHZ running win ME
the router is a Blitzz G4 wireless base.
We have mapped port 2099 to 21005 udp and ports 1698 to 1 ...