Photobucket should have an image link.
Copy the link and look right above where you are typing the text when you are creating a thread or replying, you will see the green buttons. The second green button from the left is the button for insert image.
You paste the link into the pop up and it should work.
All that pop up does is put [IMG] in front of and behind the image link.
The way I found your image link is when I clicked on your picture I then hit properties and it gave me the link. You can do this to most any image on the internet and place them in a post by putting the [img] infront of a behind the link.
Some photohosting sites already put the [img] in the link so you do not need to use the button to insert image.
If it looks like this [img]www.photobucket.com12345.jpg[img] you can probably paste it directly into your post.
Your image link for your picture was
http://i319.photobucket.com/albums/mm443/j...UM7-3-08010.jpgif you put [img] in front of and behind the link it will display on the site.
I hope this helps, if not I think andrewk has a how to for this.