Matthew,
THe "insert template here" placeholder means you need to do one of two things.
1) Copy the code from your application ADP template into the portlet ADP template. You also need to get the Tcl code into the portlet Tcl script as well.
2) Extract the parts of your template that are reusable (usually everthing after the master and property tags) and put that in a reusable ADP. Then you can include this in your applicaiton page and the portlet page.
