Thanks for the URL, however it is not applicable.
After speaking with AT&T technical support, here is the answer:
the previous employer had locked the cell phone to their server settings. According to AT&T there is no way to unlock the settings. The phone is manufactured by HTC, and according to them, contacts can be saved by:
1) copying the contacts (in a file named PIM in the MY DEVICE folder) to a SIM card. do not copy to a PC via USB or this will "destroy" the PIM file.
2) delete the existing activesync account
3) set up a new activesync account
4) copy the contacts back onto the phone from the SIM card.
I have not tried this yet, but will post the result when I do.