I think Norton screwed up my Internet

I need basic.  Here's my problem.  I have NIS, Vista and ATT DSL.  When I log off and log back on about 4-8 hours later I can't get the Internet.  Windows pops up with this message that says "unable to connect to internet".  Then I click on diagnose connection problems.  It then goes to another link that tells me to click on "reset the network adapter".  After a few seconds it says the problem is resolved and I'm able to get the Internet.  This has been going on for months after I downloaded some updates.  It must be some settings I have for Norton but any suggestion would be appreciated.  

 

 

 

[edit: Moved from this thread to a new thread of its own for better exposure.]

Message Edited by Allen_K on 02-18-2009 01:01 PM