I Am Having The CD Of Windows XP Professional SP3, In Which SP3 Intergrated With Windows XP. And I Want To Tell You That Forget About Installing XP In 2005, But My Computer Was Manufactured In 2008 Itself. And I Have Recently(March 2010) Formated It. I Have Dual Booted Windows XP And Windows 7, In Windows 7 It Is Showing Correct Installation Date.