RSAT for Windows Vista will not work on Windows 7.
There is a version for Windows 7, though we needed to dig around for it:
The links on the Microsoft Download site do not work.
But, this site has a direct link to the downloads themselves (x86 and x64) that work as of this writing: Remote Server Administration Tools (RSAT).
After downloading and installing them, note that they need to be enabled in the Windows 7 Programs and Features on or off.
Note the lack of a check mark beside the Remote Server Administration Tools feature.
Once in, we have access to the Hyper-V Manager which is what spurred the search on in the first place.
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book