Updating to xp
Next, you'll have to agree to Microsoft's complex licensing agreement.
Among the highlights: You don't actually own Windows XP and you can only install it on one PC.
An upgrade will take your existing operating system and upgrade it to Windows XP, and this is the option we will select here.
You can choose clean install if you'd like to overwrite the existing OS or install XP in a dual-boot situation.
You're going to want to defrag the disk after installation too, however, but getting the hard disk off on the right foot will speed the upgrade.
The first time that XP boots, you are presented with the Out of Box Experience (OOBE), which lets you connect to the Internet, activate Windows, and optionally register Windows.You should make note of any software or hardware issues that are found during this step.At this point, Setup is updated and some boot files are copied to the PC. If you see a message about pressing any key to boot from the CD-ROM at this point, do not do so: Your PC has been configured to boot Setup off the hard drive.There, you will find help about solving application and software problems. Open up Device Manager (Open the Start menu, right-click My Computer, choose Properties, then go to the Hardware Tab and click Device Manager) and make sure all of your hardware was detected and has working drivers.If any do not--as evidenced by a yellow bang next to the hardware device's name, right-click and choose Update Driver. The first time around, ensure the XP CD-ROM is still in the drive, and try the option titled Install the software automatically (Recommended).
Not coincidentally, Microsoft offers a tool that does just this, the Files and Settings Transfer Wizard.