Hey Omega1two, just to let you know, if you have your pic in geocities it will not work. Try making a free website in boomspeed.com to store your pics. Anyways, if I can remember, I think your file cannot have a JPG or GIF (Your file can only have gif or jpg, so you are just going to have to change it, and if you don't know how just ask me). Anyways
pretend that your source pic (also known as "url") is,
http://www.boomspeed.com/picture.gif
Now in the End of your url, you should have [/IMG] make sure "IMG" is Capitolized in front of you url. In front of your url, should have [IMG] make sure that IMG is Capitolized.
This is what you should have done
[IMG]http://www.boomspeed.com/picture.gif[/IMG
If you are wondering why I didn't close [/IMG], dont worry about it. But when you do it, it should be closed ok. Again, IT SHOULD BE CLOSED
Good Luck