Linksys Wireless Router :: WRT100 - Internet Gateway Connection Disabled

I had to restore my laptop yesterday and i reset my router (WRT100).  I ran all the Microsoft updates, but I didn't do anything with the router other than going to the Linksys site to try to make it secure.  My computer seems to be recognizing the router (although it is still saying it is an unsecured connection) but I cannot get on the internet.  The problem seems to be when I pull up the Network Connections window the "Internet Gateway-Internet Connection" is showing disabled.  I cannot enable.Everytime I try, it says "connecting...Connection failed!".  I can plug the ethernet from the modem to the computer and it works and the "Internet Gateway" doesn't appear, but when I try through the router it does.  I want to set up the router because I have two computers that need internet access.  
 
Three connections are listed--Wireless Access, LAN, and 1394  Connection.  All are listed as connected, firewalled.The second computer is also giving me a problem.  There is the wireless issue, but when I connect the ethernet from the computer directly to the modem I am asked if I want to connect via Broadband and am asked for a username/password. There is no username/password.  I've contacted my ISP (Cox cable) and confimred there is no password.