Set up an account on Photobucket, Tiny Pxs, or one of the free photo sites.
Upload your pixs, copy the URL to the file, and post in your ad.
You can only edit your original post for about 18-24 hours, so you may have to list the photos in a new reply under the original thread.
Here's a tutorial link:
https://www.24hourcampfire.com/ubbth...6239/How_to_post_your_photos.#Post696239
