I also need the service pack level for XP to do this just follow the following and it should be easy to retrieve this information.
Press the start Icon, Right click “My Computer” on the right side near the top and scroll down to “properties”. The service pack should be shown in the information the “General” tab shows Also knowing whether its Windows XP Home, Professional or etc. would be good information as well. The above will only work providing that you have two columns of programs when you open your start menu, otherwise right click my computer on your desktop and follow the above as mentioned.
How did the scan go? Did you just do a quick or full scan?