Are you running 9.04?
If so, have you tried this...
Establish a wired Internet connection. Then go to Administration > Update Manager. Click the "Check" button, and then install any updates. Then reboot your computer.
Now go to Administration > System76 Driver. Click the "Install" tab and the "Install" button. When the driver finishes, reboot your computer.
Your wireless LED now should be on, and you should be able to see wireless access points. If you cannot, there is a spring-loaded toggle switch on the right-hand side of the leading edge of your Starling. Toggle it *ONCE* to the right, and then release it. Now, reboot your computer.
Did that fix it?