If you have microsoft office, you can resize with that. I have downloaded a free resizing program called pixresizer which is good for doing just that.
Unfortunately, we don't seem to be able to upload pics now, i have sent a pm to Skadamo about this but have not had a reply. The only other option is to use a photo hosting site like photobucket, there are others like flicker and image shack. The only problem with this is that if you want to look through older posts, (1-2) years back, the pics are usually gone.