We spoke around Virtualization of Office 2007. The SoftGrid Team Blog has also just plonked there update around this also. However I wanted to let people know about this new KB. KB939897 is the "Description of the support policy for versions of Office that are running in SoftGrid Application Virtualization"
http://support.microsoft.com/default.aspx?scid=kb;EN-US;939897 

Please have a read of this so that you know the correct policies around Virtualization of the Office Suite.