I have used a program in the past called drop watermarker where you can
watermark a bunch of photos at the same time.
http://www.snapfiles.com/get/dropwatermark.html
For those users that are not Photoshop literate, Google offers a free
program called Picasa which is very easy to use. I have this installed at
home and the wife just loves it. It offers basic image editing as well as
the ability to export pictures with a watermark or image.
Check out http://picasa.google.com/
Another link to some other applications here:
http://www.tucows.com/Windows/DesignTools/Image/ImageWatermarking/
http://www.freedownloadscenter.com/Best/watermarks.html
http://www.watermarker.com/
Also, here's a Windows plug-in that I have found comes in really handy. It's
the image resizer powertoy where you can right click on a picture and click
resize to make a smaller lo-res image. Great for email and the web...
http://www.microsoft.com/windowsxp/Downloads/powertoys/Xppowertoys.mspx
Enjoy.
Ryan Ling
www.firelinephoto.com