JeffH.. I'm not sure if Ron can see the files if he has the "hide system files" turned on (Not sure what the option is called in english, I'm using a danish version of WinXP...) Anyway, the file is (as others stated) indeed a WindowsXP thing, WinXP creates it in film strip view and they are a nuicance if they slip into a zipfiles and the one who makes the zip forgets to delete them. I know even I might have forgotten some "thumbs.db" in a freebie or two. But again, the files does no harm, only they might cause panic when Mr Gates won't let you delete them. And they're perfectly safe to delete.

FREEBIES! | My Gallery | My Store | My FB | Tumblr |
You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.