Have a LOT of EXIF headers to fix...
 

I've got a web gallery of images I've taken since I went to Germany to study abroad. I just recently decided to add EXIF data to the gallery, but none of the images currently have their EXIF data anymore thanks to photoshop's "save for web" function.

Is there any (free) program out there that can easily pull the EXIF data out of the original images and stuff it back into the edited JPEGs? Windows or Linux, doesn't matter. Obviously, the easier it is to do large numbers of images, the better.

Thanks!