I have only just read this thread, and I was delighted that you found the solution in just over 24 hours. It's fascinating to have such a clear demonstration of the difference a powerful graphics card makes. A couple of questions came up: The demo is exactly the same as the full version, except that flying time is limited, and you are only given a tiny puddle of scenery to play in. In other words, what you've bought is the ability to go wherever you like ... X-Plane 10 is changing very fast, with new versions ready for download quite frequently. When you install from the DVDs, you might find it's an older version than the demo you downloaded. Just run the updater, and keep running it every so often, or whenever you read a good review about the latest version. X-Plane 10 has so many new graphics-bending features that it will be a couple of years before the average, off-the-shelf computer and graphics cards can run it with every option ticked or set to maximum. You will just have to fiddle about until you find a compromise between cosmetic realism and frames per second. There's no hard rule because some people need the aircraft to be as responsive as possible, while others like to see lots of detail on the ground. The switch from FSX to X-Plane will take getting used to. If you have any questions, don't be embarrassed to ask. Samaritans outnumber trolls here. Welcome to X-Plane! I hope you enjoy it! Guy.