One of the nicest picture management programs, which is also free come from the Google Page called Picasa. I own Photoshop and a couple of others and use Picasa 99% of the time.
http://picasa.google.com/ It will find every image in your computer and show them to you, you can click on them and send them to a file to be resized (to any size of your choice if I remember correctly), allows you to post to a web for sharing (need a google email though--no charge) You can also do many editing features, etc. and it is FREE!
Dave