How to run .dll without .h files

Hi,

I have been given a .dll without a .h file.

I have tried writing my own headers according to the solutions which were posted before, but I keep getting error messages.

http://www.mathworks.com/matlabcentral/answers/22076-use-fortran-dll-in-matlab-which-has-no-header-h-file

Can anybody tell me the structure of a header file for the .dll (Fortran)?

Jack