1. Catch the disc installation CD for xp.iso
2. Copy the disc content to the D: / XP directory
3. Download XP SP2, named sp2.exe
4. Execute sp2.exe -s: d: XP
5. Open XP.ISO with Ultraiso, delete the original content, join D: / XP all files.
6. The new XP.ISO is an integrated SP2 Windows XP SP2 installation disk image file.
Enjoy !!