Turn Screen off with Wifi Router

I tried a search but "off" kept getting ignored and I figure 90 mins of browsing the forums is enough, so I apologize if his has been answered somewhere else.

I've got the latest MightyROM and I use the built-in HTC Wifi Router. I was wondering if there was a way to turn the screen off when using it. I imagine there must be somewhere, but I sure couldn't find it.