[Winddancer]

Sorry if this is not the right forum to ask for these things, but I hope someone here can help me anyways.
I only recently bought me an iBook and happily installed my Dominions II on it. When I try to start the update I downloaded and started the update, I simply got the information:
Patch not applied. You have not selected the right file.
So I am totally lost.
Here is exactly what I did:
I double clicked on the file Dominions II patch 2.14, the program-window that opened had a button in it, labeled "Select Dominions II". I then clicked this button, selected the executable I had installed from the CD and clicked on the "Open" button.

What did I do wrong, what do I have to do?
While we are at it, how do I install mods under Mac OS X ?

Everything works fine on my Linux machine... so please, help me !