Derrick, i thought about doing my own necropsy on a baby cham that i lost a year ago, just for the sake of learning, and comaparing it to what i allready knew about lizard physiology. But my girlfriend at the time got real mad when i mentioned it to her.
As for what to look for....things that dont look right, ie, bumps, growths, strange discolourations on organs. And if you want something to compare it to, go to the library and get a book on snake physiology. Most textbooks will have figures that most laymans can understand, for a point of comparison.