Microsoft will stop supporting Windows XP SP3 and Office 2003 on April 8th, 2014 which means that after this date, there will be no new security updates, non-security hotfixes, free or paid assisted support options or online technical content updates. Microsoft recommends users and organizations to migrate to the latest systems and is providing a Deployment Toolkit to accelerate and automate deployments of Windows 7, Windows Server 2008 R2, Windows Vista, Windows XP, Windows Server 2008, and Microsoft Office products.
To download the toolkit and read more about the deployment process go here – http://technet.microsoft.com/en-us/solutionaccelerators/dd407791.aspx