If you want you can send me the picture to muttons555666@hotmail.com and i will make it smaller for you and send it back.

Or you can open it in paint, then press Ctrl+W and where it says stretch change it to between 50 or 25% depending on the size of the pic and then save it as a jpeg

Open them in Microsoft Paint.  If you can't see them when you're trying to open them, just select "All Files" instead of "bitmap".  Then just resize it to 800x600 or 640x480.  Save it, and you're done.