Microsoft Windows offers many features that make it easier for you to navigate your computer. One example is the ability to change your mouse settings so that items that previously required double-clicking to open or start only require a single click. The manner in which you change this setting depends on the Windows version you have installed on your computer.
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Windows XP
Step
Click the "Start" button and select "My Computer" in the right pane of the "Start Menu."
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Go to the "Tools" menu and select "Folder Options" to open the "Folder Options" dialog box.
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Go to the "General" tab of the dialog box.
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Click the "Single-Click to Open an Item (Point to Select)" radio button.
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Click "Apply" to save the changes. Click "OK" to close the dialog box. Close the "My Computer" window.
Windows Vista or Windows 7
Step
Right-click the "Start Button." Select "Explore All Users" or "Open Windows Explorer."
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Click "Organize" in the top left of the "Explorer" window.
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Select "Folder and Search Options." Go to the "General" tab of the "Folder Options" dialog box.
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Select the "Single-Click to Open an Item (Point to Select)" radio button.
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Click "Apply" to save the changes. Click "OK" to close the dialog box. Close the "Explorer" window.