http://blogs.technet.com/b/windowshpc/archive/2007/12/12/hpc-server-2008-beta-1-how-to-extend-the-30-days-grace-period.aspxDear community, With Windows Server 2008 the product key management has changed over Windows Server 2003 and the default grace period to do the activation is 30 days. This is too few for an full evaluation of a cluster, but this period can been-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)