Typical, I can no longer edit the original post :P

I am not sure how your camera will work, you should do some research to check how the dissembling procedure is
(you don't want to risk a spring or something jumping out that you can never get back into place for example)

Anyway, here are some very crappy iullustrative photos, I did this now, just to show how I did it.

Front removal points (sliders and knobs can be poked loose by a small screwdriver)
Front_removal.JPG

Removal of back, note that one need to lift the lever pointed out with the red arrow to be able to lift the back off.
Back_removal.JPG

This is how the tape is supposed to be attached to the back (I did it a bit loosely for the photos here, but it should be as tight and as "film like" as possible).
Tape_back.JPG

Tape attached to the ground-glass
Tape_top.JPG

Shining trough from the back, trough the tape and towards the wall.
Light_back.JPG

How the holes apear on the wall, quite a bit of detail to focus on.
wall_display_focus.JPG

Light the ground glass and adjust the viewing lens and you should be set.

Sorry for the crappy photos, was taken with my iphone, but I suppose it gets the message across. ^_^