How To Request: Cook your Own ROM

So...I did a little poking around with search and stuff, but I didn't come across too much info. Now, I'm comfortable with both Linux and Windows, however I don't have a distro installed at the moment. That said, how would one go about cooking their own ROM? I'm interested in using No2Chem's 6.1 Build104 rom for a base, and adding in a few things like HTC Home, TouchFLO, just apps that make the experience better. How does somebody cook their own ROM?