Easily swap the left and right mouse buttons in Windows 7

You have primary and secondary buttons in mouse. The primary mouse button is for selecting item(s), performing drag-drop operations, positioning the cursor. Normally the left mouse button is the primary mouse button. You use the secondary mouse button to make the context menu to appear. The right mouse button is normally the secondary mouse button. If you are a left hander and need to make the left mouse button as secondary and the right mouse button as primary then perform the following steps to swap the left and right mouse buttons:
1. Click the Start button and then click Control Panel.
2. If the View by: is Category then click on Hardware and Sound, under Devices and Printers, click Mouse. If the View by: is Large icons or Small icons then click on Mouse.
3. Click the Buttons tab, in the Button configuration section, click to place a checkmark beside Switch primary and secondary buttons.
4. Click Apply and then click OK.