I think the Active Camera (I already own )is related to get into thepassengers'cabin shown on the introductory pictures of 737NG on the PMDG web site. I think I can enter the passengers' cabin if I can open the pilots' cabin door. But how ?

Walk through it.

Make sure you open the thingypit door first lest you smash your nose!

I'm all for saving face, but the question is "How is the thingypit door opened. I can open external door OK but cannot find the magic button for this one

Alan - you can't. At least I haven't found out how. You can walk through the door and go into the cabin. Not very 'real' I guess, but oh well.