Because you are installing on a 64-bit machine and because your order contains software for both 32-bit and 64-bit machines, you must determine which version of SAS software you want to install. If you want to take full advantage of your 64-bit machine, select 64-bit Native Mode. If you are concerned about compatibility with 32-bit software you have installed or may eventually install, select 32-bit Compatibility Mode.
When you have selected the correct mode to install in, click Next to continue.