How to check if my computer is running a 32-bit or a 64-bit version of Windows.
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:
How to check the version of Microsoft Office products :
launch the Microsoft Office products and choose File > Help. Then the version will be gained.