Yeah, you can do as Baha has said and then when you type in your post, just right-click where you want to lay the IMG link down, and then click "paste" and then submit the post and it will show the picture from photobucket.
Here is a demo of what I mean:
Hi there, look at the interior of my truck!
(IMG)
(/IMG)
How do you like it?
NOW, I replaced the brackets [ ] with parentheses ( ) where IMG is in the link above, just to show you how your post would look as you type it in (all the red wording) but if I hadn't replaced the brackets with the parentheses, then that image link would look like this when I posted it............a picture of your interior!