Models aren't working in Hammer

I downloaded from this to get some metroid models, and I put them in my tf2 models folder, and they don’t work.
Help please.


So yeah, can you please help me?
I really need these models.
I think tf2 uses a .mdl file, but the models are .mtl files for some reason.
I was looking for Samus’ gunship, but FP’s search isnt working for me.

Near 30 views, but no replies?
Please, help. Or at least bump it so people see it.