Airport + Routers

[Adrian von Stechow]

Although i'm a newbie, i don't think this belongs in the newbie list:
I finally got my Airport to connect to a WEP-Encrypted Wireless Network, 
but am only connected to the first sattelite station. We have a 
complicated line of Base Stations which goes through a router and 3 
(!!!) Airport (express) stations before the signal arrives in my room. I 
can now only ping the station in front of my room. How do i tell linux 
to go through the others as well (of which i know the IPs)? We don't use 
WDS but instead, each Base Station creates its own network. I really 
need help on this one. Thanks
Adrian