A Wordpress thumbnail like plugin

Hi there I am looking for a plugin to be created. If you can check out these sites [login to view URL] and [login to view URL] you would see that under their posts you might notice images and under it with a caption and all of them linking to an [login to view URL] because if you check agoda's affiliate program it is stated that they don't need referral links only that when a visitor comes from your site then they would record it so meaning you only need a visitor click on a [login to view URL] and you would be rewarded with an affiliate cookie. I want a plugin made that would also be like the 2 sites I have mentioned above. Where I can upload an image and give a caption and put the URL on that thumbnail. I want it to be shown in below the related post and below the comment section. I want the thumbnails to be shown random also. I hope to work with you soon! and also please state I am your developer in the message to let me know you read this whole thing first.