Help me with imwheel
 

I'm trying to use imwheel to map special keyboard commands to my thumb buttons on my mouse. I have X properly configured, and imwheel -c can see the buttons as Button6 and Button7. But I've been trying to edit /etc/X11/imwheel/imwheelrc for an hour now and I can't get the config to do what I want.

Basically, I want Button6 to send the keyboard command Win_L|Left and Button7 to send the keyboard command Win_L|Right

Where Win_L is the left Windows key. (Yes, the key works ;))

Help please?