We jumped the gun on the last post.
Using the Hardware Independent Restore feature of ShadowProtect we were able to get some Windows 7 OSs into Hyper-V via P2V along with some troublesome Windows Server 2003 OSs.
We needed to extract the .MSI contents of the VMGuest.iso into individual folders and ISO them. We inserted those drivers using the HIR feature of ShadowProtect and were greeted with the Windows 7 logon screen not too long afterwards.
The post is here:
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book