Trouble installing Yoot Tower

I did some searching but found no clear answer as to what I should do about installing an old game on my OS X. I bought the game Yoot Tower and was excited to play it because it was for Macs. I put the disc in and nothing happens. When I click on the disc it brings up a window with two icons, Readme and Yoot Tower install.sea. When I click on Yoot Tower install.sea I get the familiar open dictionary message, "Unable to read the dictionary of the application or extension because it is not scriptable." This is where I hit a road block. I have no clue how I can install the game and have became quite frustrated. I have stuffit installed but when I try to expand Yoot Tower install.sea I get the message, "The destination folder "/Volumes/Yoot Tower" is on a locked volume. Please select another destination." I'm at the end of my rope. Please explain to me what my options are how I can get this thing to install and run.
Thanks very much!

First, Yoot Tower is a Classic game and won't run without Classic.
Second, are you trying to expand the .sea file on a cd? Won't work, you need to drag it onto your hard drive and expand it there.

Thanks for the advice! I now have it successfully expanded, but I now get the message, "You can't open the application "Yoot Tower" because the Classic environment is no longer supported," which involves the other part of your last message. Now, my question is how do I get Classic to run on my machine? How difficult is that whole process?
Again, I appreciate your help!

Depends on what machine you have. If it's a newer, Intel Mac, not gonna happen unless you want to try something like Sheepshaver. The Official SheepShaver Home Page
If it's a powerPC, you need to obtain an OS 9 install cd.