Currently Being ModeratedDec 8, 2012 7:05 AM (in response to PAGJD1999)
The short version is, you don't. Transcribe them by hand before you delete the Exchange account from the phone.
Everything stored on the Exchange server is 'owned' by the server. You can not move those items to another address book (you may be able to move calendar entries by editing them and assigning them to a different calendar, but it must be done one by one).
This is why it's not a good idea to sync personal information with a company owned server.