Theoretically, the build can be run anywhere ThinApp is installed. All our builds are run on a Windows 2008 server, but the captures are done on XP, Vista, and 7.
As for the list of settings I mentioned, there's two approaches: internalize everything, with exceptions, or externalize everything. In the example you provide, you've chosen to externalize everything. In the syntax I provided, the default is to stay internal, but with exceptions. This syntax is working in our environment, but your system configuration may be different. I went this route because I knew I needed PDF viewing to work, and I didn't want to disable Protected Mode in Acrobat.