Basically, "What Richard sed". However...it's very likely that a picture coming off a digital camera or scanner will be over the size limit, and will need "resizing" (physically making the picture smaller, around 500 to 800 pixels wide works well. Then, it will probably pass size muster, but if you want to post more than one, then some compression would be in order. That effectively reduces the data in the picture file. And some file types are more efficient, so you might want to change the file type. I'd recommend checking out this thread on the Administrative Forum:
http://stunthanger.com/smf/index.php?topic=5775.0 If you can get on site help, that would be the best.
We all joke about asking the 9 year old next door to fix your computer for you...but a lot of those kids don't know about anything but games.
Steve