[Distutils] Distrubiting an extension w/o source

Hello - I am trying to make a windows install for my Python program. The program includes one FORTRAN extension, which I compiled into a working .pyd file. My question is how to include the .pyd file in the distribution. In the 'extension' part of the manual you only talk about compiling from source. I have already compiled it (and it works!), just want to add it to my other files. Thanks, Mark