WMIC (Windows Management Interface Command) is a command line tool that returns information about the system where it's run. To open a command line shell, at the bottom of the screen, left side of the taskbar, in the Windows search text box, type cmd. In the menu that appears, select Command Prompt. To learn your computers model, vendor, and serial number, type the command shown below at the command prompt.
wmic cpu get deviceid,numberofcores,numberoflogicalprocessors

This will return the number of Cores/Logical Processors for each CPU on your machine.
More Windows Administration Information:
• What is Windows Aero and Mouse Gestures?
• Set Up Parental Controls
• How to Map a Network Folder in Windows 7
• How to Reset Windows 7 Password
• Understanding Windows 7 Security Center
• Kill The Messenger (Service)
• How to Check Your PCs TPM
• Windows 2000 Security Overview
• Basic Functions of Microsoft Active Directory
• Installing a Local Printer on Windows Vista
