> If it's something for general use, how about
HKCU\ControlPanel\Desktop\DragFullWindows 

Yes I'll just use this one.

> I can do some quick test installs to verify if I get a moment tonight
though.

Don't worry about it. XP and Windows 7 are enough to make the test
better here. 


> PS: Have we hit our "ridiculous amount of effort expended against 
> such a small item" quota yet?  :-)

Definitely :) 

Thanks for your patience and time.