Follow these steps to get started:
(Note: Visual Studio 2010 Professional (or above) is required to use these templates.)
1. Download and install the Windows Phone Developer Tools.
2. In Visual Studio 2010, navigate to File -> New and select Online Templates.
3. Search for "Daniel Mohl" or "F# and C# Win Phone" (a sample is below):
Note: The WP7 FSharp.Core.dll has been included as part of these templates. It is also part of the Microsoft F# August 2010 CTP.
As always, I'd love to hear your feedback on these templates as well as ideas for others that you would like to see.