Urgent - How do I find a model?

i own a garrysmod roleplay server, and i was wonderin how to change the model of a player, because i have tried using a ragdoll but they walk around in a queer T shape, so i was wondering how do i find the model instead?
I need this quite urgently…
Thanks.

Look through the server’s files. garrysmod/models/player is full of player models.