wasn't able to get a build from any os iso. i think this misty build is like all the winbuilder builds very bad. need a better way to make a custom pe without doing it manually someone else have a better way?
Launch winbuilder,
Go to source,
Select your source directory to point to your windows media installation dvd drive (E:\ for me),
Click play,
Retrieve your winpe iso in x:\MistyPE\MistyPE.Project.Output\.
Works for me