I need to edit the file info tags in my catalog of TIFF files. They all require similar data values, such as copyright info, etc. I'm trying to find a way or 3rd-party tool that would allow me to insert the same text into specific TIFF tag data fields in in one fell swoop. I've got over 100 TIFFs to edit. Unfortunately, I can't find a way in PhotoShop CS3, nor in any 3rd-party app. Does anybody have suggestions?

Thanks.