Determine if a computer is 32-bit or 64-bit Microsoft Windows XP

There are different ways to determine a computer is running a 32-bit or 64-bit Microsoft Windows operating system. In this post, I will talk only for the Windows XP Professional operating system.

Right-click My Computer --> Select Properties --> In General tab,

for a 32-bit version, the operating system will appear as "Microsoft Windows XP Professional Version " (e.g. 2002) under the System section and,

for a 64-bit version, the operating system will appear as "Microsoft Windows XP Professional x64 Edition Version ".

More information here.