[Cocoa-sharp] Apple and other assemblies not found?

[Joshua Kordani]

Greetings all!
I am trying to compile the simple tutorial found at
http://code.google.com/p/cocoa-sharp-dev/wiki/SimpleTutorial

My compiler gives me these

ApplicationController.cs(4,7): error CS0246: The type or namespace name
`Apple' could not be found. Are you missing a using directive or an assembly
reference?
ApplicationController.cs(4,1): error CS0246: The type or namespace name
`Apple.Foundation' could not be found. Are you missing a using directive or
an assembly reference?
ApplicationController.cs(5,7): error CS0246: The type or namespace name
`Apple' could not be found. Are you missing a using directive or an assembly
reference?
ApplicationController.cs(5,1): error CS0246: The type or namespace name
`Apple.AppKit' could not be found. Are you missing a using directive or an
assembly reference?


Where is this supposed to reside?  I've installed xcode 2.5 and am on
10.4.11.  Any help would be very appreciated, thanks!
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