At the office we used roaming profiles so they could log on any office PC and get their email. If your office IT is gone or non-existent why not copy over the usual email PST and restore that after the departure?
I removed a few computer from our domain that use Outlook 2007 and now their PST Outlook 2007 files seem to be gone. I look in the user folders under C:\user and am not finding anything. It seems like everything was wiped. Is this possible? Where could they have gone?