Sully, one more thing. The windows.old is generally left over from a windows version upgrade, and typically does not include any e-mail specific backups, if I read correctly:
http://www.addictivetips.com/windows-tips/what-is-windows-old-folder-and-how-to-remove-it/
Did you make any specific backups of the e-mails?
"Friends don't let friends dial-up"