There are applications out there which will allow you ro resize pictures. I like this one : FastStone Photo Resizer 2.8
and it is free.
You open the picture in the application and choose what percentage you would like to have it reduced and it will do it.
Other applications (photo editing) like Gimp or Paint.Net allow you to open the image and crop or resize. Both are also free and can be downloaded from Download.com.
“Only when you drink from the river of silence shall you indeed sing. And when you have reached the mountain top, then you shall begin to climb. And when the earth shall claim your limbs, then shall you truly dance.” ~ Kahlil Gibran