Just read a blog about riding a motorbike in the snow linked from another thread. So as not to threadjack I thought I'd start a new one. Anyway Heres the blog and here's the post
Hot tip from Andy Gower (N. Yorkshire, UK):
When trying to start a fire in a pile of damp wood, use petrol! BUT the trick is to make a proper fist sized snowball, and soak it in petrol WELL AWAY from the fire area, and place under the twigs/small stuff. (Please make sure you are well dry of petrol before lighting it). The snowball will burn with a sensible flame for a minute or so. Easily enough to get a fire going.