As far as is known there is no complete Dutch FSI course available for free outside the military.
The nearest counterpart that is available seems to be "Spoken Dutch" as offered by Spoken Language Services ($90 for text and audio)
There are some older textbooks of Dutch in .pdf available at
http://sites.google.com/site/soyouwantt ... agee-books including the text for "Spoken Dutch" (scroll down the screen and look under "Dutch").