Remove old program Norton SystemWorks 2006

I have an old Norton SystemWorks 2006 program on my computer that I need to remove.  When I go to the control panel and then the "add/remove program" I keep coming up with removal failed and gives me an error code (I think) 9999,172.  after looking around appears that it has to do with a file "GBPoll.exe" which when I try to just delete that file it says "access denied".

 

How can I get the old program off my computer?