Wireless on Sony VPCF11

I’ve just set up a dual boot of Win 7 and OpenSUSE 11.2 but the wireless is not working.

This is the device: Marvell Atheros® AR9285 Wireless Network Adapter.

I added new wireless connection in Network Connection but how can I temporarily disable the Ethernet and make it switch to wireless? Is there and app that searches for all available wireless networks?

I am totally new to Linux, your help will be greatly appreciated.