Ok, I bought a HP Pavilion s7000 slimline PC for my daughter for Christmas (it was second hand) It has Vista installed and it runs slow, has a lot of crap on it too. I've now found out that the version of Vista is not genuine. There is a serial key on the side for Windows XP Media Centre Edition 2005 and I want to install it. I've been told I need OEM discs but I can't find them anywhere, I've looked online for the last month and found nothing. Any help at all would be much appreciated.