SO, neither of them receive email or is setup on a email account?
Yes, that is simple, use Desktop Manager (download the latest version here)
BlackBerry Desktop Manager Downloads - BlackBerryFAQ
Get version 4.2 SP2. Install it.
Make sure your PC has MS Outlook installed and working. Sync both to Outlook with "Notify on Conflict" checked and two-way sync enabled.
Once you sync BB1 to the PC, then sync BB2 to the PC, resync BB1.
All BBs and PC have the same info.