translate from c++ header oruse com objects

Question

HI there, I am pretty new in C#, just wanted to ask u the following questions: I have an existing programming interface that i want to use under C#. Is it possible to use existing C/C++ header files in C# or do i need to rewrite them into new classes (all inline classes)? Can i use a com object for visual basic in c#(dll)? any help is greatly appreciated, stonee