[Ogt2]

Alright, I've been having a problem lately, and even with all the research I've done, I can't find a way to open a classic application on my Mac Os 10.5. Today, I wanted to play Myst III, and on the disk, the Installer has a ∅ symbol on it, and when I open the application, a message appears and says: "You can't open the application "Myst3 Installer" because the Classic environment is no longer supported." ... And I really want to play the game without downloading a torrent or buying it again, and I really don't know what to do. Can anyone please help me open the application? Thanks in advance to anyone who might answer my question.