you're using the HTTP tag ...
that only works if you have your pictures hosted on someones webserver, in which case you need to enter the *entire* url to those pictures.
if you have the pix on your harddrive, use the "browse" button to attach them to a post.
look in our FAQ section for more details ...
http://www.914world.com/bbs2/index.php?act=SF&f=16 Andy