I'm working in a project where an application was developed with Visual C++. I wrote a program with VFP 6.0 SP3 using the MS Access database with ODBC. I build an EXE with project manager, but there is a requirement that I have to produce a DLL which would be called from the main application from Visual C++. However, I don't know much about C++, but there is specified I must make a DLL which would have a defined function like
int function(char *param, int result)

I don't know how to set my project and programs. So - where to start to build such a DLL?

Thank's, Zlatko.