Zero hedge has a posted paper that provides some very useful figures/graphs about how a securitization is structured. I posted the link in the video section (see link below) - slides/pages 6-9 are the relevant ones. I haven't had a chance to review the whole doc, but those slides are pretty accurate from a general structure perspective (it doesn't talk about how cash flows through the structure or how things are sized).
http://www.itulip.com/forums/showthr...96423#poststop
http://www.itulip.com/forums/showthr...96423#poststop