Ryan
It seems to have cut off my comment here it is again...
1) Here is a snippet of the datagrid with the hyperlink cell
<sdk:DataGridTemplateColumn CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="Auto">
<sdk:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<HyperlinkButton Content="(view)" Tag="{Binding countries}"
NavigateUri="/CountrySummary" TargetName="UserGroupFrame" VerticalAlignment="Center"></HyperlinkButton>
</DataTemplate>
I am assuming back on my main page where I have a
<urimapper:urimapping uri="/{pageName}" mappeduri="/Views/{pageName}.xaml" xmlns:urimapper="#unknown">
it will generate the complete uri.