Problem connecting set-top box to Apple Airport Exreme 802.11n (1st Gen)

Hi there,

Subject about sums it up.  I was told my comcast that I could use the airport extreme app and go in and after I initiate pairing, go into the app and hit "Add WPS Printer," but that didn't work.

Anyone happen to have this issue, or have any ideas on what I could do? 

Thanks!

Jayme