Hi Everyone,
"I have done it" as you remember I upgraded my Norton Anti Virus and all the problems started, I had tried everything and had so much great input from other memebers. However right at the start of my problem
ARAGON suggested re-setting the router but I got put off by a friend who thought it a waste of time.
After 2 weeks or more of "hell" only one thing remained to do and that was reset the router, I have done this found that the setting had been changed by Norton (I presume) so changed them back and Eureeka!! I am up and running and my laptop and other pc are now back on line.
Big thanks to
ARAGON and everyone else who stuck with it and offered advice, I have learnt lots of things about ip's, networks etc now I am a happy girl.