Can't Install program

I am trying to load NIS 2011 from a CD.   The window appear to install the program, but when I get to setup.exe. it tried to install Microtek Scan Wizard.  This is a scanner I used to have, but it is no longer connected to my PC.  How do I install Norton Internet Security?

I am trying to load NIS 2011 from a CD.   The window appear to install the program, but when I get to setup.exe. it tried to install Microtek Scan Wizard.  This is a scanner I used to have, but it is no longer connected to my PC.  How do I install Norton Internet Security?