I wrote a simple weather radar gauge for FSX that uses the ActiveSky Next API. It has a tilt and range function, and displays areas of precipitation ahead of the aircraft.
You can download it at gum.co/bryn (it's free, but you're welcome to support the coffee addiction I developed writing the gauge).
Let me know if you run into any problems with it, or have any thoughts and suggestions about how to improve it. I could add gain, and make it prettier.
Here are a couple of early version screenshots (the changes since these versions are minimal though you'll see the 747 image didn't have tilt nor range, and you can just see the cessna only has range).
Finally a reason to use the route offset!
You can read the entire post and support discussion here.