Take a look at
http://www.sitosis.com/~rudis/. I've only just installed it today (prompted by this thread), but it looks very friendly and useful to me. (It's also free.) For the X50v, I'm using the ARM version, and the .NET framework mentioned there is already built in; just copy the .CAB file to the X50v and click on it in File Explorer. It will appear in Programs.