Frame: navigate to an xaml from external dll

Hello,

I have a SL project in which there is a C# class named "CommonClass". I use Application Cache Library, so when I add CommonClass to my projects and compile I have CommonClass.zip file in which I have CommonClass.dll.

In CommonClass I have an xaml UserControl in which there is a <navigation:Frame> control and I can load that page correctly. The problem is that I cannot navigate my xaml pages because it seems there is an error when I load my Uris from my CommonClass.dll (xaml files are not finded...). This Frame worked like a charm, now I use ACL... and some problem happens!

Are these lines correct?

this.navigation.Navigate(new Uri("/CommonClass;component/Views/FirstPage.xaml", UriKind.Relative));
this.navigation.Navigate(new Uri("/CommonClass;component/Views/SecondPage.xaml", UriKind.Relative));
this.navigation.Navigate(new Uri("/CommonClass;component/Views/ThirdPage.xaml", UriKind.Relative));