After looking around I decided to update my XP to Service Pack 3. I download the ISO image from Microsoft and burnt it to a disc. The install was going okay while it was extracting the files. When that finished I was so happy because updating was finally working. THEN, a message popped up saying I didn't have a sufficient service pack on my computer. It said I at least needed Service Pack 1 to update. Isn't that what the computers come with???? Help?