Image Resizing ( thumbnails )

Generally, it's easy to create your thumbnail images in your graphics program, but if you want something else, these may be helpful -- 

http://bluefive.pair.com/pixresizer.htm 
http://www.irfanview-ib.com/viewer/index.asp
http://www.fookes.com/ezthumbs/
http://www.imageresizer.com/

Here's a nice online resizer:
http://www.wiredness.com/