I think that Saddam will be tried in Iraq, however by US officials. Unless the country settles down in violence and establishes it's own law in under two years, the Iraqi people will miss their opportunity.
Though if he is held in prison for 5 years+, He better have some good things to tell us. I dont care how cruel they are to him, he doesn't deserve kindness, and I doubt he will change (though anything could happen...). Lets not be too hasty for a trial, he has a long list of crimes to sort through.