I've tried this script. The strumming part works well... the pressing the frets part, not so much. there simply aren't enough buttons on the wiimote and the author of the script has insainely mapped different frets to different directions on the d pad, which makes no sense. Even after I remapped it to more sensible buttons it was clear that the buttons on the wiimote are just too small and too spaced out. You could probably map 3 frets for easy, but not all 5 for hard.