Thanks Ray, working on Windows 7 x64.
1. Install Arduino 1.0.5
2. Copy the OpenSprinklerGen2 directory over to Windows.
3. Add the OpenSprinkler libraries to the existing Arduino libraries.
4. Select OpenSprinkler as the ‘Board’.
5. Select USBTinyISP as the programmer.
Voila!! All done and now I don’t have to open a VM to get this going.
Ingo