I've been a Visual Studio user since 1997, and used VB 3.0 before that. My whole professional life has been spent inside the Microsoft development environments.
Now I would like to branch out into Ruby on Rails to try something different, and it doesn't have the kind of vendor support that C# does (for very obvious reasons).
For someone coming from the world of Visual Studio, what is the best total environment (IDE, tools, gems, etc) to set up for RoR development on Windows that would make the transition easier?