How to declare a library .dll to import functions?

[Andrey via Digitalmars-d-learn]

Hi, guys
I have translated some (infact, almost all) Oracle headers to D.
E.g. this:

extern(C):

sword OCINumberSub(    OCIError *err, const OCINumber *number1,
                       const OCINumber *number2, OCINumber 
*result    );

The problem is, that D's linger cannot link all this stuff to my 
solution.

What did I miss, guys?

Thank you!