I have never heard of it, but, I am pretty sure it might be a virus. Have you tried rebooting and then, scanning with norton or whatever you have?
Was it in a pop up? Pop ups usually conceal a virus.
Use task manager to close down, if that won't work, just shut off the computer, the power.
I looked it up, it is spyware, do you have a removal for it? Ad-Aware?