I normally use Photoshop to reduce the size of my pictures, but not everyone has Photoshop. I found this program online that will reduce the size of your pictures to whatever you like, and it's FREE! I've already used it and it's a lot faster and easier than Photoshop. Check it out...
Easy Thumbnails Software -- Free thumbnail utility from Fookes Software
Easy Thumbnails Software -- Free thumbnail utility from Fookes Software