That would have been Secretary of State. Is there any position that could set her up better for a presidential run than that?
She's not an economist, so I doubt she's going for any position dealing with the economy -- and those jobs could get her blamed if things don't improve.
Many of the other jobs are earmarked for one minority or pressure group or another, and they'd definitely look like a step down for Clinton.
She could swap jobs with Rice and go to the UN, but she'd have to face the fact everyday that she wasn't calling the shots anymore.
So if she's planning to run, she'll probably take steps in that direction, and get ready to eventually campaign full time.
If she's not planning to run she could become some sort of roving ambassador, but I don't think Obama would give her the job if her main interest was getting his job in four years.