Do a Web search for "exif viewer" - there are some good free Firefox add-ons, and some that (claim to) work with Internet Explorer.
This is what I've got on the browser I'm using right now:
If you're just curious about what kind of info is available and don't want to install anything (though it's quick to do so and easy to undo), here's a totally online version (you have to paste in the URL of the image):
You can also geet a good sense of what EXIF is by scrolling to the example on the Wikipedia page
http://en.wikipedia.org/wiki/Exchangeab ... at#Example