How to Hide CoClass for Internal use only?

Hi, everyone!

VC++ can hide CoClass by modify MIDL for Internal use only.

In Delphi DAX, CoClass Flags tab CanCreate(uncheck), Hidden(check) for
Internal use.

but when install to MTS all interface is registered, i don't want to this.

I want only one Interface registered.

My Component is like this

IManager
Manager
   IFiles    -------> Collection
   Files     -------> I want to hidden
       IFileItem
       FileItem  ------> I want hidden

Can I do that?

Thanks in advance.

Sunghouk Bae