Have you connected to WiFi before with that computer running Ubuntu? If not, definitely look into the drivers as misconfig suggested
A google search shows some threads on some of the Ubuntu Forums about this issue, and there are some fixes listed you could try first.
However, it looks like some never got the issue resolved with UVerses wireless router, and had to buy and had to buy a different router.
If this is a fresh Ubuntu install, you may need to hook the machine up directly VIA wired connection and install ALL of the updates. Also, allow any "proprietary drivers" as most wifi cards use the manufacturers supplied driver.
I would suggest going that route, first. After the full update and driver install, reboot the machine and proceed with trying to connect it to wifi, again.
Ah, too little info, the bane of tech support, eh?