Need TF2 ragdolls with NO hats

Hello everyone.
Recently I’ve seen some machinimas and comics, using Team Fortress 2 ragdolls with totally no hats, like, soldier with no helmet ( or sniper with no hat.
I searched for those models in TF 2 folders, but I failed.
So, people, if anyone knows where can I get those ragdolls, please answer.
Thank you.

[editline]6th August 2011[/editline]

That’s what will help you.

I already tried that, and this gave me no result.

another way, without bodygroup changer:
ent_fire !picker setbodygroup 1/2/3/4

Notis, thank you! That actually worked. Thread can be closed now.