How can I replace the "Customizable" model of the Agile Playertype?

[Grodus]

How can I replace the "Customizable" model of the Agile Playertype?

...With a model I created in milkshape 3D?

[P.S. I have no intention to modify the abilities/hitbox of the Agile Playertype, just add a new model.]

[Ad Bot]

[Grodus]

By customizable, I mean the default playermodel that you can edit as your "avatar".

[Uxie²]

Look at other playertypes, and use shapefile to put in the dts.