In order to completely delete items from Mac OS X. Download Google desktop. This will search your computer and the web and your computer. Go to Applications. Right click on Google Desktop. Go to Show Package Contents. Drag contents into the trash. Next, go to Google Gadgets. Click and drag it to the trash as well. Go to Finder. Open it. Click on Secure Empty Trash. When you click on this, it will want you to verify that you are sure that you want to permanently delete all of your trash. When you do this, the items will not be retrievable. Click OK, if you are sure. This will take several minutes. It depends on the number of items in the trash.