I just started developing my brand new windows 8 application last week using mvvm light.I am familiar with mvvmlight WP7 navigation. How i can achieve the same in windows 8.
The NavigationService that was in MVVMLight has been migrated in a new package called WinRTBehaviors. You can also get EventToCommand in Win8nl, both from nuget. See my blog posted here:
Getting Started w/ MVVM Light for Windows 8, EventToCommand and Behaviors http://blog.tattoocoder.com/2012/08/getting-started-w-windows-8-mvvm-light.html