I used this site to get my information to connect my linksys to my modem. My daughter and I did the ipconfig_/release and Ipconfig /renew and we had it working but then it seemed as though the network from the server would not allow it to stay. So I went to this site, http://www.microsoft.com/athome/organization/wirelesssetup.aspx
and if you want to use this, copy and paste to go to the site. At any rate one simple thing I did that I think worked was when I unplugged the modem I also took that battery out and when I plugged everything back up and followed the rest of the directions I am now writing this email on wireless. Yay! Hope this can help someone who is trying to connect their router.