making a DLL in C++ Builder

I am trying to make a dll in C++ builder but I keep getting a linker error that says "Unresolved external 'WinMain' referenced from 'C:\Borland\CBuilder4\Lib\cow32.obj'"

Does anyone know what is wrong? And I did make a DLL project not a Win32 app. Thanks!

Please someone help me!! I am desperate. Does anyone have any idea what is wrong here??