What exactly do you want to do for the DS schematic? rotating 3D wireframe as in Jedi and AotC, or a red wireframe scematic on the viewscreen? Interior with the reactor core, or just surface detail? It's not complicated to produce the assets, and I too think the SciFi 3D meshes should be adequate for your purposes here (just either render as wireframe, or use a wireframe material if you'll be working in Max, you can either produce the colour and glow in Max at render time, or, as I prefer to do, do it all in post in Vegas...just remember to include an alpha channel when you render).