Download C#MTAlso includes the CocoaSharp and Mono frameworks necessary to run C#MT
Installing the frameworks:-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Get both the framework files Mono.framework and the Cocoasharp.framework and drag both of your files to User/Library/Frameworks and for some of you ( >_> ) who don't know how to do that i'll dumb it up a little. Drag both the Mono.framework and the Cocoasharp.framework folders in to the Frameworks folder in your user library and your system library.
EDIT: some errorz: put the frameworks in BOTH your user library and your system library. that should work.