It found nothing *new*. This is a good thing.
You're going to have to look in your quarantine area, and if it isn't there, look in your scan history (real-time scans, not the history of the manual scan you did yesterday). There should be a time-coded entry for yesterday saying what the trojan is, and how Norton handled it. Since it didn't show up in your later scan, Norton has protected you from it. It isn't critical that you know the name of the trojan, it's more of an interesting 'oh, so that's what it tried to do' bit of info if you look it up by name.
Thanks Doc.
My Nerds on Site guy should be here soon.
I'll keep y'all updated.