If all you want to do is resize pics, and you are running windows XP try this (Sorry to say, but right now it does not look like there is a vista equivalent.) :
OK, I've seen this come up a few places, and a few times, so I'd thought I'd just make a post.
If you are running windows XP, there is a neat little utility from Microsoft that lets you right click on an image, and just set the size you like.
The link to the utility is here:
toward the bottom on the right side of the screen you will see
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Click on the EXE file, and it should ask you where to save the file, and then you can run the executable to install.
Once installed you can just right click on the photo
click on resize, select the size you want
or enter a custom size
and it will make a resized copy for you.