Originally posted by: HN
You can use an image management program like Irfanview (http://www.irfanview.com/) to batch process (free and highly recommended for other uses as well)
or
the windows powertoy Image Resizer (http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx / http://www.steve.maurer.net/tutorials/XP_tutorials/xp_resize_pics.htm). this integrates with the shell and is nothinig but resizing.