Aero bars mean having your handlebars in front of you. This will give you more stability and comfort while riding, as well as an aero position that cheats the wind. You can purchase a separate set of bars that will clamp onto your current set-up, or you can buy an integrated system that has the aero bars built in. Aero bars can be purchased at most bike stores, or online.
If you're looking for an aero position, but don't want to purchase a separate set of bars, you can always try riding with your hands in the drops. This will give you a more aerodynamic position, and also put you in a more powerful position to pedal. However that by lowering the upper body and keeping the arms in line with the torso, they allow you to get into a more aerodynamic position. Unlike other handlebar positions, the aero bars offer a two-handed grip and armrests that can significantly reduce the strain on your wrists and hands.