First, I would suggest not getting a motorized screen. a LOT of members have used them and most of them end up breaking due to cheap gears.
Second, Road Runner is free, you can find the files for it in the Software > Front Ends forums.
Lastly, It seems like you are pretty new to the hobby so do a LOT of research, this project isn't going to be a weekend thing, you'll want to read a lot of the forums, and spend a lot of time planning your install, if not you'll end up with a install that will fail a few months in. As many other members will tell you they spent months doing some research and planning components, wiring, and how they were going to install.