Some of my desktop icons have grown to be very big. I want small icons.

In windows 7 right click on the desktop and select Personalize. Then click display on the left. Choose small, medium or large.

in windows xp;
Shrinking Icons in Windows XP

• 1 Right-click on the desktop. A drop-down menu will appear on which you will click on "Properties."
  
• 2 In the "Display Properties" box, click on the "Settings" tab.
  
• 3 Slide the scale in the "Screen Resolution" box to the right to shrink the icons (and everything else that appears on the screen).
  
• 4 Click on "Apply" and then click on "OK."
  
• 5 Click on "Start" and then right-click on an empty space until a box that says "Properties" appears. Click on "Properties."
  
• 6 In the "Taskbar and Start Properties" menu, click on "Customize."
  
• 7 In the box that says "Select an icon size for programs," click on "Small Icons."
  
• 8 Click on "Apply" and then click on "OK" to adjust the size.
  

• 9 Right-click on the desktop. When the drop-down menu appears, run the mouse-pointer over "View" and click on "Classic Icons." This will shrink the icons if they are set to either "Large Icons" or "Medium Icons."
  
• 10 Right-click on the desktop again and click on "Personalize."
  
• 11 On the "Personalize appearance and sounds" screen, click on "Taskbar and Start Menu" on the left side bar.
  
• 12 In the "Taskbar and Start Menu Properties" menu, click on the "Start Menu" tab.
  
• 13 Click on "Customize."
  
• 14 Find the box that says "Use large icons." If it is checked, uncheck it and click on "OK." This will shrink the Start Menu and Taskbar icons.