It is fair to say that just about all blender users using the .x export are having a lot of problems. The reason I'm posting this is so that anyone who has a tutorial or knows of one post it here. That way everyone can try to fix there problems without having to post them and easily look up a .x export tutorial.
So go ahead and start posting tutorial links or actual tutorials.
This is what I have found:
1: Position your objects at 0,0,0. Do this by Shift-C, Click you model Shift-S > Seclection->Cursor
2: Apply Scale/Rotation, Space>Transform>Clear/Apply>Apply Scale and Rotation to ObjData
3: In the X exporter for animations select Anim, SwapZY, Flip z, Export All. DO NOT CLICK THE SPEED BUTTON!
4:For Animated Models make sure there is a vertex group for ever bone
5:For Animated Models Make sure all Bones are connected. Select two unconnected bones and hit CTRL-P > Connected
6:You cannot have certain names for Objects, Vertex Groups or Bones ex: String
If it hasn't exploded yet, I haven't touched it.