I put a hard drive out to my sister's computer into one of my computers. When I got it started, it just had a copy of windows xp with service pack one. I have a copy of service pack 3 that I put on one of my other computers. I tried to install the service pack 3 on her hard drive and it said, you have to have service pack 2 before you can install the service pack 3. I been searching and haven't found a copy anywhere. Help on this would be appreciated. Thanks for any help on this. Chuck