Install Turbotax

Every year I go thru this problem.  I want to install Turbotax but the Microsoft Add program function isn't accepting the CD and the automatic install isn't working either.  What do I have to shut off in Norton Utilities so I can add in TurboTax?  There was a screen to temporarily shut off the virus scan but it isn't showing up.  Will probably have to do this several times during the tax preparation process.   A big thank you!  This shouldn't be this difficult.