For Daryl and those of you who have tried the importing to iPhoto - do you have your system preferences set to show file extensions? Just wondering - because it could be that the extensions are simply hidden on your systems if you have this preference unchecked. I have mine set to show all extensions - when I remove them, they're really gone, not hidden.
Paddy: This probably sounds like "Joe Dummy" but I cannot find anywhere in the "system prefs" anything to do with file extensions (where do it be??)
. In Iphoto when I export there is a box for "use file extensions" and it is checked.
Go to menu bar under Finder/Preferences/Advanced. You'll see a checkbox to always show file extensions.