Yes i got it working on windows, what i did was adding growl to the environment path to get growlnotify to work in cmd, then I tested and notice the growlnotify command in the script was wrong.

Its not suppose to be /switch argument but /switch:argument in windows.

I changed it to :

Yes, i have to fix the image just got to lazy to do it at moment lol.

Edit: fixed command, apprently windows version of growl didnt like the ' in it so i used " instead and escaped them with \ so its all working nicley now.