This is simply the easiest one to start with to get an idea of how ContentPacks work
Start by adding your DaRT CAB files and your DartConfig.dat to the _Global\PEDart directory
I'll use the following command to do a quick Build. It's not necessary to create a Task as the _Global ContentPack is processed by default
New-OSBuild -SkipTask -Execute -SkipComponentCleanup -SkipUpdates -CreateISO
Seriously, what's cooler than having Explorer in Windows Setup?