When I attempt connecting to a local area network via internet explorer I receive a message stating that an internet cable is unplugged.  I know that the LAN is active since another laptop works using the same cable and connection.  I get the same message each time in different locations.  Dial-up networking works fine.  When I follow instructions to restore the network and then go into internet connections in control panel, I have a red X through the local area connection-cable unplugged icon.  How can I restore my internet explorer capability?  Thanks in advance.

Pete Lenes