cross-compiling for Wintel

Maybe, some of you have any experience cross-compiling for Wintel. Suppose, I build a cross-compiler (running on Mac OS X) that compiles Windows code for i386. (1) Do I need a cross-linker too ? How does the linker know about Win32 DLLs and LIBs to link with ? (2) Does the produced executable run as a native Windows GUI program or DLL (without a UNIX compatible shell installed) ? (3) Same question for DOS programs. (4) Are there any GPC Pascal interfaces to the Win32 API ? (5) What about cross-debugging with two machines ? Regards, Adriaan van Os