How can I find my WEP Key to hook up my wireless printer?

I’m trying to hook up my wireless printer. I have wireless internet through Time Warner Cable and the router is in my living room. The printer found the network (I know by the name of it), but it asked for a WEP address.

I googled it and most people said it was on a sticker on the router. Well, mine is not. Others gave me an IP address to go to where I can log in and get my WEP Key. Well, most the the addresses went nowhere and I got an error screen. The one that did work was http://192.168.0.1/ which comes up as an AMBIT Broadband site.

I have no idea how to log in. I tried admin and nothing for my password, I tried admin for both, and I tried admin and the password that we use to connect to our wireless internet. None of them worked.

FIRST QUESTION: If that IP address actually went somewhere, does that mean that’s the right site for my wireless?

SECOND QUESTION: How can I find out my username and password so I can get my WEP key? Will my cable company know it?