M$ Zoo Tycoon may be ported to Mac if there is a good sized market.
Click Here and, select OTHER under Product and then let them know what you want. When you get a response, post the email address (for direct access), along with the above link and then try to get Mac users to let M$ know that they would love to play Zoo Tycoon.
Do this on several sites, and you might be able to get M$ to do it.
After that, all you have to do is hope that enough people follow though and purchase Zoo Tycoon for the Mac to make it worth M$'s effort.
By the way:
this thread/question would of been better posted in the Games Forum.
On the lighter side: Good going. Graduating (something I wish I had done) and a new 17"PB on its way. I wish you the best of luck and skill as you head out into the real world.