All your icons are gone off of your desktop and you can't bring them back.
It's an easy fix:
1. Right-click on your desktop
2. Click Arrange Icons By (or something similar depending on your version of Windows)
3. Click Show Desktop Icons
Wait a few seconds and all of your icons will come back. If they don't you should get a Mac or Ubuntu computer.
Links:
[1] http://www.yourpcpartner.com/how_download_avg_free_edition.htm
[2] http://www.yourpcpartner.com/guest_review_nintendo_wii.htm