I read the hardie lap thread but it did not address my specific question.  I had to replace a second story outside wall that had severe water damage due to a roof problem.  Roof has been replaced as well as the wall.  I will be putting hardie panels back up to keep with the tudor style of the home.  My question is:  Do I need to trim the exterior of the windows and install the skirt before installing the panels?  I am going to use fc battons and trim boards.