----- Original Message ----- From: "Jean McCarthy" <[email protected]> To: "Computer list" <[email protected]> Sent: Monday, January 30, 2012 1:48 PM Subject: [COMPUTERS] 64 bit or 32 bit > Can someone please tell me how to learn which my computer is please? I > am running Windows XP professional on this machine. Never mind the first reply. Go to start, settings, control panel, and then system. That will tell you if you have the 32 bit or 64 bit version of Windows installed.