And dont type in full caps like your first post. The site has a way of cutting out all of the caps when some one tries posting, and makes the first letter of every word in caps, but its still annoying as hell to attempt to read. Many people simply ignore posts like that, especially if they are longer because its difficult to read.
But as Adel said, you need to open a account on an image sharing site such as photobucket.com or imageshack.com and upload your pictures there. Then copy/paste the URL under the image.