Wrong, wrong, wrong, wrong. But don't take it personally... this is a
very common misconception about copyrights. Copyrights apply no matter
what you do with the derived or copied work... make money or not, sell
it commercial or shareware, give it away, whatever... if you publish it
in any form, you are violating a copyright and can be sued for it.
Copyright law doesn't care what you do with the derived or copied work,
it just cares that you have derived or copied.
Infocom may be dead, but its copyrights are still owned by someone.
They always are, unless it's been 50 years since it was written. (At
which point the copyright expires and the material becomes public
domain, unless the copyright is held by an individual, when becomes PD
a set time (50 or 75 years?) after the author's death.)
-- Carl (ravenpub@southwind.net) * ZenCrafters: Total enlightenment, in about an hour.