As of now we offer a Great Rocket and fireworks CD all in one. Some GREAT diagrams on Nozzels. How to build small liquid fueled rocket engines, High powered rocket engine instructions. Guides to ignition. Lots of different diagrams and instructions on building your own model rockets and even make your own KN rocket fuel at low costs! Many different diagrams and lots of information on building model rockets. Also included is Pyrotechnics and fireworks guide Including different color mixtures, How to make your own fuses, Cannons, Make your own black powder in simple easy steps, Chemical Equivalency list and much much more on this one CD. This CD Can be used on almost any working system from windows 95 and up including Mac and Linux operating systems. Adobe reader is used and is available on the net free if you dont already have it on your working system. The link is provided if needed along with CD. GET YOURS TODAY!