The sooner Microsoft gets everyone to run Windows 7, the better. Windows XP SP2 will retire soon. July 13, 2010 to be exact. You can still use Windows XP SP2 as long as you want, but you won’t get any support or updates. That’s fine with a lot of people, but if you want support, you can always update to Windows XP SP3 which will be supported until April 2014.