Thank you for the clarification. I came across the Dreamspark key, and I came across the Microsoft x64 trial ISO image, so I think if it works with 2003 just like with 2008, it would be wonderful! I will go the SLP Key way then. I already had experience in activating my home-made OEM XP Pro, so it would not be too difficult for 2003, just that following the link it seems that some extra work for converting trial to OEM? Unfortunately trial is the only image I have for x64.