Suspicious.cloud.7.ep

when I am on line with internet explorer Nortons antivirus gives me a message it is checking "Suspicious.cloud.7.rp"  and it does not fix anything.  It keeps checking this file so many times it slows the computer to a snales pace.  In checking out what the antivirus results tells me it has to do with a corrupted file C:\users\armon\appdata\local\winzip computing\mc_dec_dv100.dll.

I had to boot to the safe mode in order to delete that file as it is in use other wise.  Then every time I boot the computer it tells me it can't run that file.  So I ran Windoctor and found the run comand in the register and deleted it.  How do I stop the antivirus from checking this probelm?