http://blogs.technet.com/b/uspartner_ts2team/archive/2011/08/10/upgrade-a-foundation-server-to-windows-server-2008-r2-standard.aspxRob Waggoner If you bought Windows Server 2008 Foundation or Windows Server 2008 R2 Foundation and you’re now out growing it, Microsoft is offering a limited time upgrade to Windows Server 2008 R2 Standard .  Until September 30th, 2011, you can en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)