continue_physics.blend is only an example file from the internet, because I don't want to bother anyone to build up an example with cloth physics to test my issue. You can use the feature cloth physics independently of that file.
Here is the related site:
http://wiki.blender.org/index.php/Doc:Manual/Physics/Clothes

Thanks, ventilator, I always seem to miss something simple - I'll try it again, although I thought, that I did it in that way, as well.

EDIT:
I probably doing somethin wrong with writing the animation in the exporter:
- I set a name in the action: "wind"
- in the exporter dialog I choose: export animation
- I write into name: "wind" (without quotation marks)
- I write into frames: "250" (without quotation marks)
- I choose "v" and export it
but there's only one frame in the mdl