Currently some of our products only support Window XP/Vista/Win7 32-bit system. Under 64-bit computer, you may fail to install the product or encounter unexpected cases. Also, our product supports Office PowerPoint 2000,2003,2007 and 2010 32-bit only.

How can I tell if my computer is running a 32-bit or a 64-bit version of Windows?
Click the Start button > Control Panel>System and Maintenance, and then click System.

Under System, you can view the system type.

What is the difference between 32-bit and 64-bit versions of Windows?

The terms 32-bit and 64-bit refer to the way a computer's processor (also called a CPU), handles information. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system. For more details, go to A description of the differences between 32-bit versions of Windows Vista and 64-bit versions of Windows Vista online.

More information can be found here:
http://windows.microsoft.com/en-US/windows-vista/32-bit-and-64-bit-Windows-frequently-asked-questions

How to check the version of Microsoft Office products :
launch the Microsoft Office products and choose File > Help. Then the version will be gained.