Right click the folder or icon, select properties, change icon, in the window of icons you will see a blank spot, click it to select it as your icon. then exit. Now right click it again and rename it exactly as follows press and hold alt and press 255, its a blank name. now the icon or folder will be completely invisible. You can put it way off in the corner and nobody will ever know its there. If you put your mouse over it, it will still turn to the hand to indicate there is a folder there.