Difficulty Level: Beginner
Microsoft is constantly updating XP, with the intention of improving XP and making it more secure. It is essential that you update your XP installation via Windows/Microsoft Update. To access Windows/Microsoft Update got to:
Start>All Programs>Windows or Microsoft Update
A Microsoft web page will appear and you will get the option of "Express" or "Custom". If you select Express then only the updates Microsoft classes as critical will be installed. I personally recommend you select Custom, as then you are offered non critical updates and driver updates for your hardware as well. Which ever you select, Microsoft will then scan your PC to see which updates you need. If you selected Custom, then all critical updates will be automatically added, you manually need to select the other updates you require (select all of them). On the left hand side of the page you will see High Priority, Software and Hardware. You click on these and select the updates, then click review and install, then install. This sets your PC off downloading all the updates you selected and installs them.