Ah! Sorry, my mind is slipping . . .
The default 737 has NO interior views. The views you see when you look "left" or "right" are views of the DVC itself.
But you could possibly do something about this.
First you need a screenshot image taker, such as Irfanview or FSScreen. After you have that, you can take screenshots of the interior and edit them like so.
Start a flight on a clear, beautiful day with NO clouds. Take the 737 up to about 50000 using slew and then pause the program and turn off slew. If you look out the windows, you should see nothing but a blank blue. THIS IS IMPORTANT. Get the aircraft to a place where all you see is clear blue sky and then take screenshots of the views you normally find. (front-left, left, rear-left, etc.) After you have all the views (should be 7 of them) exit FS.
If you don't already have a good paint program such as PaintShop Pro or Photoshop, I would go out and get one. They are essential for working with FS textures and panels. If all you have is MS paint, I think you can do this, still.
Open each view you created and select the blue using the color-specific selector tool (Magic Wand, or something similar) and then delete it. Replace the color with a flat black (0,0,0) and then save as left_forward, etc. Do this for all the views.
Now go take a good look at the panel configuration for the default Learjet. This will give you a good idea of how views like you are talking about work. Now just apply the methods used in that panel to your own.
This may take some time, so don't get discouraged if it doesn't work right off the bat. Try messing with it some, and eventually you'll get something that works.
Good luck . . .