Make an account on photobucket, find where the image is on your computer, and upload it. On photobucket click on the image and to the left of the image it will have a box with 4 lines of code one of email and IM, direct link, HTML code, and IMG Code*. copy the IMG code onto the post. if all things done correctly, it should show up.
* Alternatively you can hover over the picture on your account and the same box will come up.