Sorry, Ozzie. As Paul Harvey sometimes says, "Don't ask me for details.
I've already told you MORE than I know." :>{
I've never been a big user of Backup\Restore programs. (My main use of
backup\restore was for something like moving a 5MB program by backing it up
to multiple floppies and restoring it on the other computer.) But I'm sure
there are many users here who know the answer to that. If you don't get a
good answer here in this WinXP newsgroup, you might try one of the many
Win9x/ME newsgroups.
My limited understanding of backup\restore generally is that each backup
program uses its own compression and coding algorithms, which are not likely
to be understood by any restore program except its own companion program,
which may actually be a component of the backup program itself.
RC