Wireless Networking

[David DelMonte]

I've asked this before but didn't get a satisfactory result, so please 
forgive my multiple postings...

I am in Europe where right now I am limited to using ISDN. Also a big 
limit is that the ISDN Terminal Adapter (aka modem) connects to the 
computer through USB.

I want to set up a wireless network.

I have an Airport card and an Airport Extreme base station.

I want to connect my client computers through the base station, have 
one computer connected to the network adapter, and share that 
connection.

Any one know if this is possible, given my network connection type. If 
it is possible, how can I configure it?

Thanks