I'll try 1.

I would think not, unless that box is identical to the original as the
registry entries re. hardware would not be correct.  You could certainly
restore the "data" but not the OS and related files.

Re. 2.

I would think you could restore the "cluster" backup to one of the original
systems as long as all of the drives are visible to that system.  There was
an excellent description of the method to use to backup an NT cluster
provided here a number of weeks ago.  Perhaps the author of that note can
repost it here.  I don't think any of us see that one too many times.

Kelly J. Lipp
Storage Solutions Specialists, Inc.
www.storsol.com
lipp AT storsol DOT com
(719)531-5926