The Single-click to open an item (point to select) mouse setting in Windows XP is NOT located in Control Panel / Mouse.

To configure the Single-click to open an item (point to select) mouse setting in Windows XP:

1. Start / My Computer.

2. Use the Tools menu and press Folder Options.

3. Select the General tab.

4. Check the Single-click to open an item (point to select) radial button.

5. Press Apply and OK.