I like having an icon on my desktop for “Computer”. If your current Desktop is missing the Computer icon it’s an easy fix.
1. In Vista right click on your Desktop.
2. Click on Personalize
3. Click on Change Desktop Icons (in the left window pane)
4. Place a check mark for the icons you want on your Desktop
5. Click OK
Note- You can also customize Desktop icons by selecting it and then choosing Change Icon