How can I create an executable .exe PE file manually?

Question

All texts on how to create a compiler stop after explaining lexers and parsers. They don\'t explain how to create the machine code. I want to understand the end-to-end process.<

Answer 1

Not surprisingly the best sites for information about writing PE format files are all about creating viruses.

A search of VX Heavens for "PE" gives a whole bunch of tutorials for modifying PE files