i have just bought a machine from a friend and with it was given windows
vista 64 bit. Being paranoid I did a full format and installed everything
from scratch using the vista disk and product key supplied.

I have the original hologram disk and case and the sticker which i have
placed onto my computer case as directed however when i try to activate via
the net i am told that the product is already registered and i need to
purchase another licence.

the software is only installed on one machine what do i need to do