It's great software for writers. And it's FREE!
It's also amazingly so simple...
It's called "Dark Room". It's actually a "clone" of software available for the Mac, called "Write Room".
Anyway, if you do any writing, get it and try it out. It's WONDERFUL for writing - especially if you're easily distracted.
I just love it, personally...
Very simple. Yet it helps you write. Try it and see for yourself...
Here are the links...
Dark Room (for Windows) -
http://they.misled.us/dark-room
and the original version (for the Mac), Write Room -
http://hogbaysoftware.com/products/writeroom
Best wishes,
Dien