Dual Networking

Hello all,

I was wondering if it was possible to do the following:

Connect ethernet cable to a 10.x.x.x network to get access to files, printers and other network services.

Connect my Airport to wireless network 172.x.x.x and get access to the internet.

There is no internet on the 10.x.x.x network however when ever I connect the ethernet cable my Network Status shows that the Built-in ethernet is currently active and that I connected to the internet via my Built-in Ethernet.

My Wireless status show me as connected to the wireless network but no internet.

I would like to change it so it shows I am connected to the internet via my wireless card

Any suggestions would be grateful.

Thanks Again!