You've made the necessary preparation, and now the time is at hand. There are four methods you can use to install XP Service Pack 2: Automatic Updates, Windows Update, Network Install, and CD-ROM Install. We'll explore the first two in some detail.
Of these methods, the easiest way to install SP2 is to simply enable Automatic Updates. This is noteworthy because this is the first time Microsoft has ever made a Service Pack available with Automatic Updates. After Automatic Updates is turned on, your system will download the SP2 startup procedure, well, automatically. It will even do this in the background (as with all the other Automatic Updates) so that you can continue working normally while the service pack is downloaded.
Here's the easiest way to enable Automatic Updates:
Once Automatic Updates have been enabled, SP2 should soon begin downloading in the background. When finished, you will see the balloon message in the taskbar that you see in Figure 1-5. As the balloon instructs, you can click it to begin SP2 installation.
Figure 1-5. Service Pack 2 is ready for installation.