New here - Need help on how to swap a model

[Kishikume]

I would like to know how to swap the Lord Garithos model in the gamefiles with this custom model:

The Legion commander #wc3version

Special thanks Blood Raven's for allow me to used some of his model... And the Model is base on Dota 2 one of my favorite Heroes The Legion commander Hope u guys enjoy! Don't forget to credit us both, once you use this model. Update Animation attack 2 fix. Weapon and back piece scale...

www.hiveworkshop.com

To play this version of the Legion Commander in the DotA map. If as well, anybody can help me on how to swap the voicelines with a Priestess of the moon, I would be very grateful.