Well Jay if you do put Linux on dont format the 3rd partition. Linux uses a different file system than windows. So that will help you install Linux.
There will be a Linux boot loader that you will use to swap between all 3 OS's. I have tried to help you get the other OS installed. Where did you obtain your Server 2003 from? I had no problem installing mine with a dual setup with my XP. I just inserted my disc and away i went. Even installed it on a different partition.
Tyler i dont know if there are any awards for ratting on people. I just gave you the info i knew about OS X on PC's. Like i said it has been tried many times espically since the announcement of MacTels. I would contact Apple/Mac and see what they have got to say.