You need to load the photos to a location on the internet. Then you can post a link or you can use the UBB code (look left) to post the picture directly to the topic.
Looks like you got it, from the other thread.
Jesse's right though, links are better than straight up images in the post.
The opinions and views expressed on this board are the subjective opinions of Ambergris Caye Message Board members and not of the Ambergris Caye Message Board its affiliates, or its employees.