I doubt Ken Lay will see any real jail time. In spite of what his wife says, they still have plenty of cash for those top notch shisters. Appears to me that Skilling and Fastow are the ones that the Fed's want anyway but like Lay, they also stashed enough ill gotten gain away to put up a strong defense.
There is also the issue of campaign contributions made prior to the collapse. Enron was in the top 50 list of doners, and with 74% going to Republicans (94% in 2002), it will be interesting to see just how agressive this adminastration will be in going after them. I believe that if Bush wants to get reelected, he will have no choice but to put some of his friends in the Hoosgow.
This mess isn't going away, It's just been pushed off the front pages.
http://www.opensecrets.org/alerts/v6/enron_totals.asp