To add to the posts

...this is a great program for beginners & one of the easiest program on the net to resize your pics....
http://bluefive.pair.com/free95.htm
Scroll to PixResizer……Download the program..it’s really small and very easy to install – Depending on the size of your image you just have to click ONE SIZE (USUALLY 50%) or 460 Pixels and it resizes it for you... you have options of manually telling it what size or using a slider
I added a screen shot of it - that's the whole program on one single screen...very easy to use !!