Hi Pilou & Stefan, after writing the points out to the file you can use the ImportPointFile script at the same link above to do that:
http://moi3d.com/forum/display.php?webtag=MOI&msg=5124.2

It has an option for how to process the imported points, you can make point objects out of them, a polyline, a control point curve or an interpolated curve. The ordering of the points in the file is significant though.

- Michael