By adapting the Wine compatibility layer for Windows, some enterprising developers have developed a method to run Windows programs under OS X for Intel. While porting Wine to OSx86 requires some serious tweaking (which still results in some unstable programs), work such as this opens a wide range of possibilities for the future. Since future versions of OS X will be built on the same Intel processors that Windows programs use, will we one day be able to use Windows apps as if they were native to OS X? [via] Link.
Windows Application With Wine + X11 Works