216511 Small aspx coding job

I have an aspx web page built in Expression Web that is a menu for selecting and downloading MS word document templates. The menu is driven by TreeView. Currently the NavigateUrl for each TreeView node points to a MS Word template (.dot) or Excel template (.xlt) in the templates/ subdirectory. Example: asp:treenode NavigateUrl="templates/Binding [login to view URL]" Target="_blank" Text="Binding Confirmation - Generic" ToolTip="Binding Confirmation provides all information needed by agents in order for them to book their account: confirmation of binding, policy number, issuing company, premiums by line, commission, TRIA, state surcharges, billing type, payment plan." Value="Binding Confirmation"> /asp:treenode> Problem: Clicking the link downloads and opens the template itself (.dot .xlt)