Dont know if it has been posted, however if you go to.
http://www.sprint.com/raphael
http://www.sprint.com/diamond
You get something interesting.
If you press cancel or escape at the prompt it leads you to
http://dl.oz.com/dl/sprint/HTC/raphael/OZWinMobIM.CAB and
http://dl.oz.com/dl/sprint/HTC/diamond/OZWinMobIM.CAB respectively, seems to be dl's for Sprints OZ mobile IM.
A person from another forum found this, just passing the info.