Explorer's toolbars aren't set in stone. To add or remove buttons, go to View-Toolbars-Customize. The customise dialogue box contains two lists of buttons - Available toolbar buttons, and Current toolbar buttons. To remove a button, click its name in Current toolbar buttons and click Remove. To add one, click the place you'd like it to fit in the Current toolbar buttons - the new button will go above the selected one - select the button you would like to add, and click Add. To change the position of a button, select it and click Move Up or Move Down. In addition, you can use your mouse to drag and drop list items to add, remove or move. If you veer too far from a usable toolbar, you can revert to a default setting simply by clicking the Reset button in the Customize Toolbar dialogue box.