Linksys Router Problem

Hello,

I had my router set up and all worked well. I recently was traveling and hooked up to the Internet at the hotel. when I got back from my trip I do not even see the Signal on my home wireless system (in the wireless network connection in my toolbar). I thought at first it could be a wireless or internet issue via Comcast-but my wife's laptop seems to be working fine as well as our iphones for the network? I tried several searches and connection troubleshooting but at this point stuck

Thanks