I'm trying to figure out the best way to configure a needed script.  Scenario:  We are using quest migration tool to migrate mailboxes from two separate exchange 2003 orgs to a native Exchange 2007 org.  The destination 2007 org has 4 CCR clusters with 15 stores each.  The quest tool only allows us to "synch" mailboxes to one destination mailbox store per server.  Once migrated, the mailboxes must be moved from the single store they were synched to, out to one of the other 15 stores where they will ultimately live.  Users are distributed across the stores and organized by the first three letters of their last name.

example: 

store 1 would have users with last name A with second letter of lastname (a-l)

store 2 would have users last name A with second letter of lastname (m-z)

I'm envisioning a script that will read values (such as the first couple letters of surname) maybe using a get-mailbox command, then pipes those values into a move-mailbox command that would move the mailboxes to the correct stores based on their last name. 

I'm a scripting rookie, and looking for some direction on this.  Script masters, please help!!  If you need more info, let me know.  THANKS!