Well it's in the title, I'm a C beginner. And I did a little program to help to configure VMC for HDD with crazyc's branch of OPL.
Just unzip the folder READ the README and enjoy it, report bugs here and post suggestions here. Don't forget it's still a beta.
Note that I am not the author of the hdl_dump.exe file, I just picked up it here http://hdldump.psx-scene.com/ .