We have a 2nd tree with basically nothing in it, that I know of, and the
user name and password is unknown for that 2nd tree. Is there anyway to
reset the admin (administrator) password?

Or is a total server install needed? But if that is the case we would
need to create a new tree, thus a 3rd tree.

We have our WebAccess webserver in this tree. Unable to upgrade our
WebAccess to v7.