Norton Internet Security upgrade

Hi

 

Last night I got a pop up offering a free upgrade to my Norton Internet Security.  I ran this and when the computer automatically rebooted it could not activate the new upgrade as it could not connect to the internet.

 

This appears to be because following the upgrade all my network connections have disappeared - so no ability to connect to the internet and activate. 

 

 I restored my computer to a date a month ago (ie before the upgrade) but got the message that there had been no changes to the set up since that date and so I still have no internet connection.

 

writing this using internet at work so unable to try solutions until this evening so any suggestions on how to put this right would be gratefully received.

 

I guess you may need my system details.....I'm using windows xp on an Inspiron 8600 laptop - have had this with Norton Internet Security loaded on it for 5 years and this is the first problem I've encountered.

 

Network connections which have become disconnected are:

Intel(R)PRO/wireless LAN 2100 3A mini PC Adapter

Broadcom 440x 10/100 integrated controller

 

Thanks in advance - J