I have a P7 flashlight mounted on top of my helmet. When I got a GoPro it came with a head strap.
I mounted it on my hemet like a miner's lamp. In the following videos, this is the setup that I had:
http://www.youtube.com/watch?v=0d0X7...hannel&list=UL
http://www.youtube.com/watch?v=hheUc-zlfiM&feature=plcp