It's not really the best thing to think about logically. (Personally I don't think windows even looks good on a netbook.) But from a realistic standpoint, this phone just achieved ROOT. The boot loader is locked, and there isn't a working recovery for it yet. Aside from that happening, you'd need to find someone developing the OS for you, or you would have to do it entirely by yourself... well I doubt others on here are even considering it. Windows is so far out of the question, and Ubuntu, while it is still Linux based, is built for desktops. There are a few tablets that were produced with Windows/Andoid Dual Boot, but even those were sketchy. (From what I've experienced, Windows isn't a very "tough screen friendly" OS) I'm not saying it's impossible, but only that it's very unlikely, and way to soon to be asking about that. But don't let me stop you.
If you are really adamant about this, you could begin reading "how to's" and pulling apart the OS to see how they work. You could maybe even start working on it. Who knows. Anyways, good luck and stuff.