I see that you use Photobucket. They offer the IMG codes for "Billboards" right under the image.
Since these images are HUGE, I would suggest you make them into clickable thumbnails instead.
Go to your album, check the pics you want to use, and then click the "generate IMG and HTML codes" button on the bottom right hand corner. Then copy and paste the code in the "IMG clickable thumbnails for message boards - recommended" window directly into your original thread.