Mopower440, If you decide to use the vinyl siding you will need to do your trim work (j-channel around windows doors & eves,outside corners & inside corners if you have any inside corners that is) before you start your siding panels, so the cut ends of the panels are tucked in the j-channel (unseen)
Also a good tip if I can explain ,When cutting the j-channel above doors & windows cut the j-channel about 2" longer than it needs to be,then trim with snips the face of the j-channel on the ends the extra 1"on each side back to be even with the window and also do that to the side attached to the barn leaving a 3/4" tab that you can bend down into the vertical j-channel going up the side which helps in tighter fitting the trim and also helps in sealing the weather(water) out! /forums/images/graemlins/shocked.gif