I'm trying to set myself up for new Windows Phone development, and have found that I'm out of date. One thing I'm adding is Windows Azure, and man, am I out of date on installation stuff. After installing the things for push notification it asking me about Web Platform Installer 3.0, with 5 items: Application Request Routing 2.5, IIS 7 Recommended Configuration, VS 2010 SP1 (I'm pretty sure I've already got this), Python Tools for VS 2010, and Windows Azure SDK for Node.js - May 2012. I might add the Windows Azure SDK for Node.js, only because I've been hearing so much about Node.js recently in podcasts, but I'm not sure which of the other 4 I should add for push notifications for the phone. What do you recommend?