I saw on the thread someone mentioning people who are trying to convert the mmap function into a function that would work under Windows (Mentioned in my link), but I'm not sure if they will release it or how long it will take. I'm not doing it myself because I'm dual booting right now so I can use the converter under Linux.
It might work under Cygwin with the gcc compiler, but my experience with that has been not so good.
I would suggest either waiting or find another converter to do the job. Mariowario said that he knew of 2 converters, so if he tells us the other one you can use that.