In CorelDRAW
X3, fountain fills and vector
effects, such as bevels, drop shadows, transparency, mesh fills, and blends,
can contain both process and spot colors. Even spot colors beneath vector
effects are preserved rather than converted to process colors. You can import, export,
and preview files that contain spot colors.
I don't know if that applies to CorelDRAW 12.
TIFF dose not support Pantone, while PDF, EPS and AI do.