Finding plenty of ways to run Android on PC but not the other way around.
Methinks you'll maybe be too restricted by the CPU, etc, to be able to run Widows but you can get apps that will remotely connect to your PC so you can do things like this:-
Run Windows 7 on Your Android Phone
Of course, if you feel totally geeky, you can run Widows 3.1 (or lower) on an Android but I don't think that's what you are looking for.
Install & Run Windows 3.1 on Android Phones with aDosBox