fdr1876.fdr - Spyware?

Have a program called WinPatrol that lists "Hidden Files ". Kept seeing the above used their Info Plus website and it had no info on this. Then used google and msn search and found nothing.
So- ran reg edit and found 5 or 6 listings each with a different number inserted.
Since no search engine could find anything on it and WinPatrol had no info on it on their InfoPlus website, I started deleting one at a time, with 3 deleted so far, making a reg backup and restore point each time just in case.
Have found, so far, no ill effects from deleting these, but, I delete them with WinPatrol and even tho the one deleted don't show back up again another one with a different number does.
After deleting with WinPatrol they are still in the registry. I have hesitated to remove them from there so far, but after getting all of them with WinPatrol if no ill effects show up I will delete all of them from the registry with backup first.
Since there seems to be no info anywhere on this was wondering if anyone else knew of it.
Your input appreciated.
Thanks,
DED

 

Can't find much on that extension to be conclusive:
http://66.102.7.104/search?q=cache:....asp+.fdr+extension&hl=en&gl=us&ct=clnk&cd=17

But I would doubt they are a threat seeing as the little bit of info provided does not allude to this being so.