Step 1: Left click the wireless icon in top-right section of finder menu and select uofs-public from the list of broadcasted wireless networks:

Step 2: Read the Terms and Conditions, then press I Agree, as below.
NOTE: For Mac OS 10.7, you will need to have the Safari 6 software update installed to display the login page correctly. The update is available from Apple Software Updates (click the Apple Icon in top left corner then select Software Updates)
NOTE: You may need to open a web browser (such as Safari) to see the Terms and Conditions page:
