Hey unitednations and welcome to AA. The person you need to contact is Andrew McFadden. He built an awesome 3D background for his cichlid tank and created an article on how to do it. I linked the page below. Pm him and i'm sure he'll gladly help you out. He's a nice bloke and you'll be in great hands... Good luck with it and don't forget to post some pictures of the end product, we all love pictures here on AA!!. You could even keep a video or photo diary of the build and then use it to help it other members.....
3D freshwater aquarium backgrounds - Aquarium Advice