May not help, but based on this (even though it is a few years old):
http://stackoverflow.com/questions/193896/whats-a-good-c-dec...You may want to look at joining up with these guys (this looks fairly interesting):
http://boomerang.sourceforge.net/
Or these guys:
http://www.hex-rays.com/decompiler.shtml
(btw- I am more into Java decompiling (as a user). For Java, I've used Jad but it looks like there are a few others: http://stackoverflow.com/questions/31353/is-jad-the-best-jav... and a number of people like JD: http://java.decompiler.free.fr/ )