I was following the video "Creating Custom Modules with Sitefinity Thunder" at http://www.youtube.com/watch?v=UKs02SwV-To
(around 47 seconds in the video).
VS2012 Update 3
Sitefinity Thunder 18.104.22.168
I do not have the "Sitefinity Custom Module" in Visual Studio's Add | New Item. Has it been renamed, or is that a known issue?