In reply to Harry Ellis:
Hi Harry, I would recommend CVT, Mountain Dropoffs or Chamvan. These three companies are run by good people that respect their drivers.
Chamexpress has a pretty bad reputation in town for its level of service and treatment of drivers. Some folks who have worked for them would be better to comment than me though. Chamexpress has changed ownership now, so maybe its different now.
The one thing I'd say though is that you should get you D1 drivers licence before applying for a job with any company in Chamonix. Switzerland has a strict set of criteria for who's allowed to enter the country to work (acces de marche). For transfer drivers they are required to show two years prior experience driving vans, or a professional licence (D1).
Lastly, save up a bit of cash before the winter starts, then take a part time contract so that you can have a better chance of profiting from good conditions when they arrive.
Cheers,
Andy