I had a customer today that needed a quick method of resizing images prior to e-mailing. A quick look around revealed a very cool Image Resizer that was part of Microsoft's power toys.
Installation is easy and usage is just as simple. Now you can right click on an image and choose "resize image" from the action menu. This opens a dialog prompting you for a few standard sizes. Click OK creates a new image.
From Microsoft's Site:
"Image Resizer This PowerToy enables you to resize one or many image files with a right-click."
You can get this and a number of other cool add-ons here:
http://www.microsoft.com/windowsxp/down ... rtoys.mspx