when you type your post, at the point you want your picture to show, type this[IMG]HTTP//WWW.YOURPICTURESVERYLONGADDRESSHERE.COM[/IMG]
to copy and paste the address is the easiest way. To get the address of the image, I open up another window with the picture host site. I right click on the image. It gives me an option to "copy image address" or something to that effect. This is the best way to get the entire address. Make sure you use the right brackets and don't forget the forward slash in the second IMG tag. and there are no spaces.

I hope that helped.