no internet access error message with linksys wrt54g2 v1 router

Hi,

I had plugged in my linksys wrt54g2 v1 router to the LAN connection and the wireless connection was working perfectly fine. Couple of days back there was some problem with the LAN connection and eventually it got resolved. Now when i connect my wireless router back to the LAN, the ssid is listed and when i connect to the WI-FI, see an error message saying "no internet access". Could anybody help me resolve this issue?

Note: I did reset the router and changed the necessary configurations, but it still does not work.

Thanks!