Help with Settings

Hello....  :smileyfrustrated:

 

   I am using Norton Internet Security 2012 and am having a problem with watching Youtube videos, whether on their site or someone has posted a video from youtube. I have tried to get help and some say it may be a setting in my  Norton.... Either the internet security or smart firewall or  Antivirus....  maybe in ad popup or ad-blocker> should unchecked (?) or something...  Does anyone know where to find the correct setting(s) that may be the reason I cannot view youtube videos ?  I have IE8 (someone also suggested I go back to IE7) ?....

  Thanks