Microsoft is like the parent of two kids — one everybody likes (Windows XP) and one who causes trouble and that no one wants to deal with (Windows Vista). XP keeps getting invited to the party, but Microsoft makes it take its bratty little brother.

Even though XP is still the most-used version of Windows Web (Metrics vendor Net Applications Inc. pegs XP as driving 73% of the personal computers that went online last month), Microsoft is going to force retailers to stop selling it in just five weeks.

According to Microsoft, June 30 is the last day it will permit retailers and OEMs to sell the nearly seven-year-old operating system.

For a FAQ on what exactly this means, click on this ComputerWorld article.