Just thought I'd plug this here.
Its a game that is nor easy to come by these days. There are not too many copies on ebay or amazon, or if there is sometimes be sold for am awful lot. Getting it on gog.com may take some time, but if does I'll buy anybody a copy that wants one.
Just need to go to the link above, sign up or login in, then vote on that page. Make sure to vote on the right Trespasser, as there are two wishes, vote for the one with the most votes, about 381 at the moment.