If you need sharp edges, assuming you're using polys or sub-d's, all you need to to is add an extra edge (using the Split Poly Tool) close to the edge you want to sharpen. The closer the edges are, the sharper it will be. If you're using sub-d's you can also use Crease (Subdiv Surfaces -> Full/Partial Crease Edge/Vertex)
Liter is French for 'Gimme some ****ing cola before I break vous ****ing lips!"