organic mesh and bones problem

[Tactical Trance]

im working with a small team right now and im having a problem with bones. im using lightwave to export to direct x. it works fine untill i try to add a bone. basically all the mesh vanishes when i try to load it up in irrlicht. i do not have any experience with this kind of thing im just the team's modeler and hopefully animator. I need to know what program i should be using to rig and animate my mesh.

[puh]

resave in Meshviewer grom D3D-SDK