Install WinXP/7/8 on Android Device I know that it's possible to install WinXP or other Windows versions to an Android device, but I don't know how.

I tried BOCHS but it doesn't work on my Xperia Z1 or I don't know how to set it up correctly.

Is there some complete tutorial or something?

Remark: I don't want to replace Android on the device. I want to run Windows "on top of it" (e.g. in a VM).
You might be able to use a QEMU based app like the one from MotionCoding, but I can't see it running on anything other than very high end Android devices.  Even then, I doubt a VM will work very well...