In this instructable i show you how to... *sigh* just look at the title...
You will need:
External DVD drive
Windows 7/Vista install DVD and serial
Windows XP install CD and serial
Step 1: Install Windows XP
Install Windows XP as normal, but save time and do not care about any of the other settings, just enter serial, create account, setup wifi/wired, activate, and go on to the next step.