I''m getting started with developing a GUI for a small RPG I''m making with Turbo C++ 4.5. SDL, though, has selections only for Borland C++ 5 and their free compiler. Does it really matter which one I use? If it does, which?

Never mind... I figured that out, but now I have another question: when I try to include sdl.h, it comes up with error message such as "Unable to open include file SDL_TYPES.H". I have them all unzipped into the same directory... what could be wrong?