Yes, the comcast modem connects to the wireless router. The only thing I don't have is the WEP key. And it is not listed on the bottom of the comcast modem. And like I mentioned earlier the home PC does not work so I can't get any information from there. Do I have to call comcast?
You said you can connect the laptop with the cable, so use that connection to get to the router setup and change the WEP key. It would not be on the comcast modem, the WEP is set in the router. Once you connect to it, you can set it to whatever you want.