Windows XP - It's been running, and running fairly well, for over a decade, but, as with most good things, it is finally coming to an end (together with Microsoft's Office 2003 suite). What are your options? Here's a good resource to see whether you (and your computer) are good candidates for upgrading to Windows 7, Windows 8, or a range of other possible solutions). http://www.howtogeek.com/172243/windows-xp-users-here-are-your-upgrade-options/