Need HELP DialogBox Function Not working!!!!!!!!!

[stato10]

DialogBox( hInst, MAKEINTRESOURCE(IDD_JOYST_IMM), NULL, MainDlgProc );

for some reason this code wont compile and is doing my head in. the error I am getting is

C:\Program Files\Microsoft Visual Studio\MyProjects\BlueCar\Joystick.cpp(42) : error C2664: 'DialogBoxParamA' : cannot convert parameter 4 from 'long (struct HWND__ *,unsigned int,unsigned int,long)' to 'int (__stdcall *)(struct HWND__ *,unsigned in
t,unsigned int,long)'
None of the functions with this name in scope match the target type



If anyone could help I would be very grateful

stato10