Outlook Profile Infected

Outlook 2007 and 2003 Profiles
Operating System XP Pro


I know for a fact I have something in several Outlook profiles on different computers. I keep getting returned e-mail (undeliverable) that I never sent, or thought I never sent. When I send 1 email I notice it sends 2 of 2 most every time on the status bar. I even wiped one computer to be sure and get a clean plate to work from but the problem has to reside in the .PST file. It was scanned with Zone Alarm, Spybot S&D, Spyware Blaster, CCleaner, Windows Defender, and 2 other "˜online’ scanners, nothing.

All computers are "˜clean’ as far as the above programs are concerned therefore I can only assume it was resident before I got to the computers. "˜HiJack This’ does not list any extraneous or unknown programs so something has dug itself in deep into the .pst. I would prefer to keep the .pst and would have a difficult time without the information so just dumping it is not an option for now.

Is there a scanner for Outlook? I am not that familiar with the operations of Outlook, I usually have good luck at keeping **** out of it. But I am not sure how to detect or eradicate a resident problem while keeping data intact.
Any ideas would be appreciated…