build a binary for Windows on Linux, Solaris or Mac OSX?

[Skip Montanaro]

I'd like to package up my typing watcher script in a bundled form (no
separate Python install required) for use on Windows.  (Un)fortunately, I
don't have access to a Windows computer.  Do any of the packaging tools
(py2exe, MacMillan's Installer, etc) allow cross-platform bundling?

Failing that, can I coax someone into building such a beast for me so I can
include it on http://sourceforge.net/projects/watch/?

Thanks,

Skip