lol,
simple, you cant....... Unless you willing to write an app to do it.
Have a look at this process, https://www-secure.symantec.com/connect/forums/question-about-best-practice-disabling-archives-users-move-different-environment and you could use the PST an use exmerg to import into exchange.
But then again you are on v5 so you shafted with the previsioning groups.