It stinks but you are supposed to soak your nails in acetone/ nail polish remover for at least seven minutes then attempt to take the nails off. If they don't come off do it again. When they come off buff your nails so you are not left with the white residue on your nails. :)
The white line at the end of the nail, hanging out over your finger, is called the free edge. White lines in the middle of your nails are referred to as Beau's lines. You may learn details using Yahoo/Google search.