You do realize that Olympus makes more than one kind of camera, right? If your camera isn't an 'extreme' sports camera like the Contour or the GoPro, then you'll have a hard time finding a helmet mount for it.
Best bet will be to either:
1. Make one yourself
2. Fashion one out of a gorillapod or tripod head mount.
Failing that, I would search google or find and Olympus camera forum to ask people on.