DirectInput

ARGH!!! I am trying to set the device format to use in my app and my compiler tells me that the dammed c_dfDIKeyboard is unresolved. I''ve already added the dammed libraries (dinput, dxguid, ddraw) and the include files (dinput.h, ddraw.h), and I''ve already tried it on DX8 and DX7. I am using Borland C++ Builder 5 and I''ve already imported the libraries using implib... Is there any super hero out there that can help me? Thanks a lot, André Luiz Silva