To view or edit EXIF information, for instance in Windows Explorer, all you need is right-click the selected files*, and choose "Properties" in the context menu:

And go to the "Exif Farm" tab in the opened window:

* Batch editing is available in the registered version only.
Please note: Exif Farm is not a standalone program. It is a plugin integrated in the operating system, so the installed software cannot be opened using the Start | All Programs menu in your system. To view or edit EXIF info with Exif Farm, find your file(s) in Windows Explorer. Right-click the selected file(s) and choose "Properties" in the context menu, as stated above.
Short guide
How to create EXIF information
How to batch-edit EXIF data for a group of files
How to export / import EXIF information to / from XML file(s)
How to delete EXIF information
Flash demo - how to use Exif Farm
Limitations of the trial version: batch editing is available only in the registered version.
Download Exif Farm (1.1M) - Windows XP
Exif Farm (19.95)
Technical support via email and upgrades for the first 12 months after purchase are included. If your free upgrade term has expired, you can buy the new version of the program at the 25% discount.
See also
Exif Pilot - standalone program for viewing, creating and editing EXIF information.