Kerry's a smart politician with Kennedy behind him, and that machine is at least equal to the Clintons'. Kerry is going to win the nomination because the alternatives are too dreadful. (Dean, Clark, and yes, Hillary.) There will be no contest.
Her boy Clark is no threat to Kerry, and without Clark she can't even become the veep candidate.
She's aging fast and looking downright unhealthy. By the time her resume makes a presidential run plausible she'll be retiring for medical reasons.
Lots of Democrats detest her too.
So forget her. She's just a bogeyman, she can't hurt you.
Bad advice my friend - forget her at your peril.