From what I found online it looks like that was supposed to be something done with bootcamp but I didn't see that option. I already have a Windows partition but without the drivers.
Insert your mac os x install disk in windows XP. It should automatically start. If not go to my computer then right click on the disk drive and click open or run.
The drivers are on your OS X disc. Either the recovery discs that came with your Mac or with the OS X disc (if you bought the OS disc). That will have all the drivers you need. I believe its through the Boot Camp assistant to actually install them.
Noname is right: after you fully install XP (from the XP disk) stay in Windows and put in the OS X disk. It will auto read and install all the drivers so that XP knows where to find the hardware - WiFi, audio and video cards, etc.Enjoy!