After I download the images to my computer.
right click on image>open with Microsoft Photo Editor.
in the tool bar >image>resize>change to pixels in drop down window and make it 600x800 or whatever pixels.
In tool bar >save as>whatever you want,when you do this your original image is saved and you now have a smaller image.
You can also use picasa,flickr,google,myspace and many other hosts as well.