I've gone into Control Panel > Program and Features and requested an Uninstall of the Muvic Smartbar which does not work. Can I use CCleaner to remove the Muvic Smartbar somehow?
You've been infected by malware. You need to go to a malware removal website immediately.
Please see #10 in this thread
http://forum.piriform.com/index.php?showannouncement=15&f=4
It will point you to sites that can aid you.