It's very hard to see a scenario where Hillary actually wins the White House. Even in New York, Hillary ran about 5 points behind Gore in 2000, meaning that some people who supported Gore just couldn't bring themselves to vote for her. If you play that out nationally, she would probably win at least several fewer states than Gore did in 2000, under close to ideal circumstances (apparent peace and prosperity under the Democrats).
I agree, but in poll after poll she is the favored nominee in the Democrat primary. If Bush wins a 2nd term all the attention shifts to Hillary for '08, unless she loses re-election to the Senate (unlikely). She and Bill should have kept a low profile since 2001 because a lot of people will get tired of them hovering in the background for years on end. (Especially if anyone's keeping an eye on his "habits")