Below are the databases we've put together as a starting point for building plugin installers for your databases. First grab the "Presentations and Databases file which contains the FileMaker stuff you need for both Server based and Local based installers, and a copy of the slides used in our workshop at DevCon this year.
In addition there are 2 installer "kits" one for each platform that provide a template for building your own installers. These files are all provided "as-is" and include a couple of example plugins which you can just remove and replace with the plugins you actually want to install.
You'll also need the software that builds these installers:
Install Creator by Click Team for Windows
Package Maker, part of Xcode Developer tools by Apple for the Mac