Edit: Thanks, guys, that worked! The problem was that I interpreted the earlier "no bold brackets" as "omit the brackets" rather than "do not boldface the brackets."
Put the address of the image in between the img brackets.
Do you use Firefox or IE? If you're using Firefox, just right-click the image and choose "Copy Image Location." Then just follow those instructions above. If you're using IE, the only way that I know how to do it is by right-clicking the image, choosing "Properties," then copying the "Address (URL)."
Sounds like a lot, but it's a pretty quick process. Practice to see if you get it right by previewing before you post.