PC cleaner V10 virus

Hello Norton folk, my name is John and i have a Virus that Norton has not detected after updating,

the virus is called PC cleaner V10 and it has infected a game (railroad tycoon 2) i noticed this when i went to re-install the game after it stopped working, the window asking me to install pc cleaner popped up and i of course did not install it.

how do i dispose of this pest? i found another forum that seems legit. "PC Help Forum" they seem to have delt with this before, anyone familiar?

 

thanks

-John