JPEG Resizer is a free program to resize JPEGS - works great for me. You can even run the EXE  without installing it, if you wish. --AnnaSummers

http://www.virtualzone.de/resizer/

From website:  "JPEG Resizer is a powerful tool for Microsoft Windows which allows you to resize lots of JPEGs with just a few clicks.

It's packed with various advanced features such as Anti-Aliasing, 
Colorization and selectable JPEG Compression Factor. You can choose 
between four different resizing methods, specify how resized JPEGs 
should be named and where they should be stored.

If you shot photos with a digital camera at a resolution that is too 
high for presenting your photos on the internet, you need to resize 
them. JPEG Resizer makes this jobs quite easy as you don't need to 
resize each single image for itself."

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