Run Windows apps on Mac
Applications are developed to run on specific operating systems because of thier different architecture, file systems and other developer specific restrictions. Most available software is supported on the latest Microsoft Windows operating system, Windows 7.
Installing applications on Windows is managed by the Windows Installer. The Mac OS application handeler does not recognize Windows executable files, so installing Windows applications on a Mac may not be successfull.
To run Windows apps on your Mac, you will need to have Mac spcific versions of those applications to be able to install. Refer to the software manufacturers system requirements to see if the application can be installed on your Mac.
Some applications may not require installation and can run from the executable.
There is an alternative to running Windows applications on a Mac rather then downloading the specific OS version. By installing Windows 7 on Boot Camp on your Mac, you will be able to use the full functionality of your Windows applications on your Mac hardware. For information on how to do this, read this article on how to install Windows 7 on your Mac using Boot Camp.