I think you are out of luck! Support (as defined below by Microsoft) ended in August 2013. Time to upgrade to WHS2011 (with support to 2016) or Windows Server 2012?
End of support
End of support refers to the date when Microsoft no longer provides automatic fixes, updates, or online technical assistance. This is the time to make sure you have the
latest available update or service pack installed. Without Microsoft support, you will no longer receive security updates that can help protect your PC from harmful viruses, spyware,
and other malicious software that can steal your personal information. For more information go to
Microsoft Support Lifecycle.
Phil P.S. If you find my comment helpful or if it answers your question, please mark it as such.