Hey OP. Did you get this setup successfully? I'm guessing that you have FIOS and are using the Actiontec router? The users who are saying it was simple may be on a different router or service. Chromecast is plug-n-play unless you're on an Actiontec. I have tried several suggestions found on the net but nothing has worked.
For the posts saying it's a snap, are you using an Actiontec router with FIOS? If so can you detail the steps for getting this up and running?
Cheers!