@vincew,
You need to create two Template Views and one View.
Parent View Template: contains [wpv-view name="View"] which call the view with its items
Child View Template: contains [wpv-body id="$parent" view_template="Parent View Template"], which call the parent Template View.
View: Display the child pages.
@kennyY,
Perhaps the solution mentioned by you was found here (should works too): http://wp-types.com/forums/topic/displaying-siblingbrother-pages/