Sony SoundForge does this pretty well, but it'll never be perfect because of the method involved.
Go to: Effects/Pitch/Shift. Set "Cents to shift pitch by" to -72.4 and check the box for "Preseve duration". The mode option gives you several profiles you can use. Some will sound better than others. Preview and see what you like.
(This tidbit is ripped from one of pupil's old posts.)