NORTON 2011,WONT WORK AFTER INSTALLING

HI ,WONDER IF ANYONE CAN HELP ME,MY NORTON 2010 WAS ABOUT TO EXPIRE ,SO I BOUGHT THE NEW 2011 CD TO INSTALL FROM PC WORLD,I'VE NEVER HAD ANY PROBLEMS BEFORE,WITH INSTALLING IT.

I REMOVED MY OLD ONE AND PUT IN THE NEW CD IT KEPT STOPPING AND SAYING IT WAS NOT RESPONDING,AFTER A FEW ATTEMPTS IT LOADED FULLY ( I THINK ) AS IT SAID IT WAS FINISHED.

BUT SOON AS I TRIED TO GET ON THE INTERNET IT SAID I COULDN'T CONNECT,

 AS IT WAS MY LAP TOP ,I CHECKED MY NORMAL PC AND THAT WAS OK SO I THOUGHT THERE WAS NOTHING WRONG WITH CONNECTION,SO I TRIED TO OPEN NORTON BUT IT WOULDN'T OPEN ,A BOX CAME UP SAYING NORTON CAN'T OPEN AS THIS FILE IS UNREADABLE,AND CORRUPT,I TRIED ALL SORTS  TO GET IT OPEN ,REBOOTED SEVERAL TIMES AS IT KEPT DISK CHECKING EACH TIME I REBOOTED,IT NOW SAYS NORTON CAN'T OPEN AS IT HAS FOUND AN INTERNAL ERROR,IT WONT LET ME UN -INSTALL IT EITHER ,BEFORE I TAKE IT IN TO A SHOP TO GET IT FIXED I WONDERED IF ANYONE HAD COME ACROSS THIS BEFORE,

THANKS  JAN