I know there are similar add-ons for Internet Explorer that let you do the same, there're also shell extensions to show exif information in Windows Explorer - the names just don't come to mind right now.
Windows XP can give you EXIF info without any 3rd party program. Download the photo to your computer first, (I put it on Desktop) then Right-Click-Properties. Click Summary tab then Advanced>>.
Tim, thanks for the info, but I just have the pics stored on a host site. I've already removed them from my computer and I really don't want to put them back in there... but I'd still like to be able to access my settings info when I post a pic here if that's possible. Having just discovered this site recently, I've just been posting some older pics. I won't have this problem when I post new ones. I just take so many photos that I've been trying to shoot, post-process in PSE, then print/save to CD and finally delete them from my hard drive as quickly as I can.