Trying to uninstall Shopop

When trying to uninstall from the Control Panel>Programs window, I get a message asking me if I want to allow Shopop to make changes to my computer. When I click on No, it quits the uninstall process. I’m afraid to click on Yes because it might open me up to even more malware. How do I get rid of it?

I ran a scan with Avast and Avast says it has removed it, but it still shows up in my program files.

TIA for any help.

Please attach your logs. (MBAM, OTL and aswMBR…!!)
Instructions: http://forum.avast.com/index.php?topic=53253.0