Microsoft has a new tool called Microsoft Photo Info which is an add-in for Microsoft Windows. It lets you add, change and delete common metadata properties in your digital photographs and, it works from inside Windows Explorer.
You can edit images individually, or as a group and the program will recall recent entries such as Location, to save you retyping them. If your camera’s clock was wrong, you can change the time of the image and view common EXIF properties.
The program supports JPEG, TIFF, WDP, HDP (HD Photo), NEF, CR2, and CRW1 files.
Find it for download at: PhotoInfo