Airport Basestation - wireless network gone

Hey everyone,
So the other day I came home from work and my wireless network was no longer being broadcast. Neither my macbook pro or my roommates macbook could find it. The ibook connected with an ethernet cable could still access the web however. I tried a few restarts and then tried a hard reset after which I can no longer connect to the router. All I get is a flashing amber light and I can see the basestation in my airport utility but I can't connect to it to configure it after the hard reset. I've been running the BS connected to my cable modem and wireless acces to several macs and pcs for months without incident. Any suggestions?

Thanks everyone