If you haven't formatted yet, and you have a CD burner, you can slipstream your SP2 into a Windows XP installation disk.
Follow these steps to Slipstream SP2 to a new Windows XP CD.
1. First off, download SP2 from here
Save it to a designated area. (C:\SP2)
2. Insert Windows XP CD to a CD Drive, and copy the contents to your harddrive. (C:\XP)
3. Make a new directory. (C:\SP2S)
4. Extract SP2 contents to your new directory.
A. Open Command Prompt. (Start --> Run --> CMD)
B. Type C: and Command Prompt will turn it into "C:\>"
C. Type CD SP2 and Command Prompt will turn it into "C:\SP2>
D. Now it's time to extract.
E. Type in WindowsXP-KB835935-SP2-ENU.exe -x
F. A dialog box with appear, and then browse to the C:\SP2S folder
G. Type in C: then CD SP2S then CD I386 then CD UPDATE (You should now be in the C:\SP2F\i386\Update)
H. Now you have to type in update /s:c:\XP
5. The Windows Installation CD should now be updated and it's time to create a Bootable CD out of the C:\XP folder.
6. You will need a program able to create .ISO files. (MagicISO, PowerISO, UltraISO, Nero, Roxio) (With this tutorial I will be using MagicISO.)
7. Open MagicISO.
A. Locate your C:\XP Folder in Magic ISO
B. Drag and Drop the folder to make an ISO file.
C. Now it's time to save it as an .ISO file. File --> Save As --> (Name it what you want. I name mine Windows XP SP2)
D. Now it's time to burn the new Windows XP installation CD. File --> New --> CD/DVD Bootable Image.
E. Locate your .ISO file you just saved. (Windows XP SP2)
F. Once this is done, you're done, and now have a Windows XP installation with Service Pack 2 already installed without having to download it.
8. Time to format and reinstall Windows.
I DO NOT ACCEPT ANY RESPONSIBILITY OF MY SUGGESTIONS!!!