Looks like a harmless video [click here]
than ... BLAM!
Donwload the latest version of the software from the site and install it on the infected PC.
Restart your computer in safe mode and give this a full scan.
It finds all the viruses, trojans, dialers, DNS.Changer and all the like.
Open DynDNS > Advanced > Uncheck "Enable DynDNS.com Internet Guide on this PC" I found that this is new to version 4.1.4. I have also disabled my DNS services in my services.msc.