How can I change the name of a shared folder/hard drive hooked up to my airport extreme?

Hello,

I was curious if anybody here may know the answer to the problem I'm facing. It seems like such an easy task, but I just can't figure it out.

I have an airport extreme a1143 hooked up to my network directly to my router via Ethernet. I have a USB Ext. HD connected to AEBS. When I click on the Airport Extreme in "Shared" under Finder on my Mac, it pulls up a little folder with people on it (meaning it's shared). It is my Ext. HD, but it's called "NO NAME".

As silly as it sounds, like it to be called something other than, "NO NAME". Does anyone know how I can change this?

Thank you,
Mike