Failure to install security patches is a major cause of computer break-ins, especially for home computers, most of which are not protected by firewalls. I recommend you take a look at your Windows Automatic Updates setting and change the settings so that security patches are downloaded and installed automatically (if you are more of a “hands on” computer user, then you should set Automatic Updates to automatically download security patches and then inform / ask you to install them).
Install patches now (www.update.microsoft.com) (you must use Microsoft Internet Explorer for this)
Instructions: Configure Automatic Updates for Windows XP. Automatic Updates for Windows Vista.
Peter H. Gregory 
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