brendano: Since the first title is a 16-bit game without a DOS version, I think it's unlikely that it will show up on GOG unless presto writes a new engine. In that case I hope they write a win32 version of Pegasus Prime, I've always wanted to play that. JMP3 had a few issues last time I played it on XP, it'll need some work as well.
Well they never wrote the engine for it to begin with, it was using Adobe (Macromedia at the time) Director so it should be possible to open/convert the scripts to run on the latest version.
StingingVelvet: I haven't bought the second as I am waiting for the first... bummer.
The second one is self contained you can play it without any prior knowledge of the first one. It's the third one that is more directly linked to the evens of the first game.