I've cut out some doors. She's mad, I hear you cry! Well, that's probably true, but I think they might come in handy for a game. I might get around to doing the windows at some point... watch this space.
The first one is a beauty! I've cut and I've shaded, so, because it's a transparent layer PNG file, you can paste it onto any wall texture you like and it's ready to go. See the little image here where I've done just that.
The second door is a simple 6 panel door. Again, it's a transparency layered PNG file. The cables would have to be tinkered with to make them merge with a wall texture... but that should be easy enough.