Resize images version 1 was more a can i do this type project. Version 2 is 100%(minimum) more useful. The application is actually 3 apps (view source for more details).
1: a console app for creating reg keys for the windows shell, it also creates a regkey for the size you wish to change the images to
2: a winforms app that allows you to set the right click in place(this will auto happen if you run resize images on installation) and set the size of the images. It basically runs app one with or without arguments.
3: the app that does the resizing. This is what gets called when you right click and choose resize images.
If you need help or want to get involved, please let me know and I will answer you.