As you upgrade your organization’s desktops to Windows 7, are you still trying to decide whether to deploy the 32 or 64 bit edition? You might be worried about compatibility issues and drivers on 64 bit Windows, and if you have older peripherals, that’s a legitimate concern. However, there are some important security benefits to going with the 64 bit version, including kernel patch protection and driver signature enforcement. Read more about them here:
http://www.biztechmagazine.com/article/2011/07/boost-security-64-bit-windows-7