Hi Husky, snowy landscapes can be a funny thing. Traditionally they fooled cameras into underexposing slightly, giving a dull result. The key was to apply a little positivie exposure compensation - we discuss this in this video tutorial
at our sister site DSLR Tips.
But then I've just returned from a snowy place where my camera consistently overexposed! So I had to dial in a little negative compensation!
The key is to realise snowy scenes can cause some exposure issues, so keep an eye on your images - and check the histogram (see manual) to see if you've got a good exposure. If it looks too bright or dark, you can adjust it as required.