
No worrys Miscreant
You need to assign your vertices to bones using vertex groups. Currently your animation is working with envelopes, which DirectX will not use.
Switch your modifier to use Vertex Groups only, and you will see that the animation is distorted.
You will need to follow my Blender 2.5 tutorial on
exporting for DirectX, and look up the
Vertex Group section in the Blender Documentation.
Another thing, is that you do not have to parent the mesh to the armature; just add the armature modifier and that will suffice.