Start with a working Mac project. Duplicate the Mac target and change its name to Windows and change the build settings as described here: http://www.cocotron.org/Tools/Build_Settings/?path=Tools/Build_Settings
Actually, it is amazingly easy. Please note: if you use the script in Cocotron/1.0/bin/retargetBundle, you don’t even need to determine how to install the Foundation DLL.
, Cocotron Foundation.framework: Cocoa.framework Foundation AppKit , OS X.