Nice to see you back, Codetrucker
I tried a MapiLabs application a couple of years ago to remove duplicates from my Outlook pst (pretty sure I was running Outlook 2000 at the time). It worked well, but it was as scary as some of the less feature-rich duplicate finders I've tried in that it was hard to determine what I was deleting and from where...
Might be worth a look now, though. I know the MapiLabs add-ins are fairly well thought of. This, of course, assumes that you're using Outlook as your e-mail client...