nash

IrfanView is very likely the best way to go. For basic editing, I've never seen anything better. It's very fast and pretty easy to use. And best of all, it's freeware!

edit: I've never tried putting more than one image on a page, but there's a preview and you can resize it however you want. If you want to position it you have to know how far from the borders you want the image to be (but there's a preview) or you can just choose "center image."