yes, but they are a two edged sword.
for example my son's headmaster was telling me that they recently bought
a bunch of computers. The school licence, he thought, entitled them to
Win XP. however that is only an upgrade licence, which was useless when
buying a new box. (Unless they bought a bunch of 95/98 licenses and then
did the free upgrade to XP.)
We have a pile of NT4 licenses that are never installed, that we use for the same sort of thing.
