http://www.irfanview.com/
This is a download page for a free photo editing software. It is really exceptional in its quality and ease of use for a free download. To resize a photo is simple and easy.. and the end product is very good quality in a light weight custom sized photo.
The only problem I have with it is when you install it.. be careful at how much authority you give it over your photos. It can be invasive and very hard to change once you have given it the power.
