Q re Com Interop and threading

Hi

I have a COM dll which I'm wrapping with COM Interop. I need to be sure
that if I'm making calls to it from a DotNet component which is creating
and running multiple thread, I'm not accessing the same underlying COM
component.

Could someone explain (or offer any links which explain) the method to
achieve this. Or will it just work like this out-of-the-box?

Thanks

Simon