Export user mailboxes to individual user pst files on Exch 07 sp3 & then delete?

hello fellow spiceheads!

I am in the need to export about 15 user mailboxes from exch 2007  running on sbs2008 to pst files within a certain date range.  I got the code from good ol' MS:

http://technet.microsoft.com/en-us/library/bb266964(v=exchg.80).aspx

To export data that was received between specific dates to a .pst file, run the following command:
Export-Mailbox -Identity -StartDate "" -EndDate "" -PSTFolderPath \.pst

What I want to know is if there's a command that will cycle through all user mailboxes and create individual pst files for each user.

And then I need I need to be able to delete from the exchange db the emails that were exported from the date range that was exported.  That command I can't seem to find. }:-/

Thanks everyone!

ceez