Make Windows application work on Mac OS X

Please suggest ways to deliver Windows application (.NET) to Mac OS X. Mono isn't an option, I'm looking for a solution that requires 开发者_运维知识库no code changes. I'm considering VirtualBox virtualization (http://www.virtualbox.org). Any other suitable options?

Thanks!

Alternatives to VirtualBox include Parallels Desktop, VMWare Fusion, and CrossOver Mac.

If you don't want any code changes then having it run under some sort of emulation - be that a virtual machine, or some other way - is the only thing you can do.