Introducing the Feature Framework with Windows SharePoint Services 3.0 and MOSS 2007: http://www.aspnetpro.com/newsletterarticle/2006/11/asp200611vs_l/asp200611vs_l.asp
Automation in Visual Studio 2005 for WSS v3 Feature Development: http://sharepointsolutions.blogspot.com/2006/10/automation-in-visual-studio-2005-for.html