HS specifically has several ways of getting itself to work in Vista. This coming from several Users with various specs. One of which was as Shorts said, "Adminstrative Priviledges", another was to select the Program to run in compatibilty mode with any Windows Version in the List that appears.
Users have gotten HS to run without problems by either using 1 or both or none of those settings...it's strange really, but totally true. The main difference being the OS, Vista Home, Professional, 64, etc, seem to be why it works this way.
I don't believe we foresee any problems from HS or Gly with Windows 7, but time will tell.