Obvious questions no one seems to be asking

So if Saddam and sons do go into self-imposed exile today or tomorrow, does that mean there won't be a war, and we'll just toss in a new leader in his place?

I assume we'll start bombing lots of suspected WMD facilities when the 48 hours are up. Since they're our best guesses where weapons previously not found may reside, we're going to be blowing up lots of stuff and making mistakes (they can't all be WMD facilities). Anyone see a problem with that?

How do know when it is over? When Saddam's body is found? When weapon storage areas are all blown up? What's the goal of this action and why isn't it clearly being communicated?