Linksys Wireless Router Connection issue.

[T]i[T]a[N]

Okay so I have been connecting wirelessly through my Linksys Wireless Router Model: WRT54G for quite some time now, and then all of a sudden this morning I cannot connect to the internet on any of my laptops and had to override my router to connect on this desktop. I have tried checking my router by logging into it, but I need to have it plugged into the desktop to do so, and it will not let me log in if the internet is down. My Local Area Connection 2 is telling me I have Limited or No Connectivity. I have tried resetting my router several times, and still no results when trying to connect wirelessly. When I try repairing the connection with the "Repair" option in Local Connection 2, It tries to Renew my IP, and always seems to fail. Any suggestions? :banghead:

-Thanks.