I just updated the LightSwitch Deployment guide I wrote back in March for the RTM release of Visual Studio LightSwitch. This guide is meant for people who want to host three-tier LightSwitch applications on their own IIS servers. There was only a couple screen shot updates but now it should be clearer on how to set this up. You can read it here:

Deployment Guide: How to Configure a Web Server to Host LightSwitch Applications

Enjoy,
-Beth Massi, Visual Studio Community