Autocade import tabs .max, .step etc.

[danicad]

Good morning, I often have to import .max .step files etc that autocad and fails to finish the operation. there is a program or a way to import any type of files?thanks.
I have another question: do you know sites where you can download free famous works in 3d? Thanks again.

 

[Tristan]

I often have to import .max .step files etc.

autocad does not import .max files

Is there a program or a way to import any file type?

any? I exclude it in the most absolute way