FakeFactory Alyx Skins Question

I was wondering how I could replace Alyx’s skin in Half-Life 2 with one of the models from this: http://www.garrysmod.org/downloads/?a=view&id=34198


I expect it would be nearly as easy as installing a custom skin/model
Just poke around in the download files

PS: Sick puppy is Sick. Stop being Sick, Sick Puppy

PPS: Replying to a bump…Sorry Chaps