I know there are other ways to go about this - Basically I want to generate the small .thumbnail image for a bunch of images for use on the iPhone (wallpapers, photo's, etc)

Back in the day, the iPhone it self would generate them - This has not been the case for some time now........ Surely there must be an easy way to general .thumbnail files (.thm) of the images inside a folder either on a mac, pc or on the iphone itself???