Or, another title could be "how to quickly enable syntax highlighting and intellisense for MonoRail view file types"...
Mainly just for my reference, 'cause I can never remember the Guids for all those editor types in the registry for Visual Studio. :)
Just add a couple DWORD names/values to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\8.0\Editors\{8281C572-2171-45AA-A642-7D8BC1662F1C}\Extensions
- boo/27 - for Brail
- vm/27 - for NVelocity