Same here. I know old-school x86 DOS apps can be run on Android devices using DosBox. So, I would think it would be possible to run Windows apps, although it probably goes without saying that a much more sophisticated emulator would be required.
PS: It's also possible to Emulate old versions of Windows. I once saw someone emulate Windows 95 on their device. Again though, this probably won't help anyone who wants to run software that isn't older than Gandalf himself.