Possum, You can buy the game at Matrix Games (or other software sales):
http://www.matrixgames.com/games/game.asp?gid=342
The first and only patch (so far):
http://www.ufo-extraterrestrials.com/
The game is very tough with the original units. There is a great mod for it here (Ver. 3.12):
http://ufo-scene.com/plugins/forum/f...topic.php?1576
It's some good work and he's still working on it. Bman is the AT of the UFO-ET crowd.