Tie accounts to mailboxes that have been imported...

I imported mailboxes from an exchange 2003 sbs server.  However it doesn't seem that accounts were created for them.

Here is a screenshot of the accounts that have been imported:

http://www.embracenext.com/jing/2013-03-25_1420.png

The ones with 2kadmin.com have been imported.

Now here is a screenshot of my Office 365 Users:

http://www.embracenext.com/jing/2013-03-25_1421.png

When I try to make the Brad, Steph or Tim account, it tells me it already exists.  I see the email address exists in the exchange side but no user to be able to log in with.  Can someone help me out on creating users for imported mailboxes?