The greatest treatment for influenza infections in humans is prevention by vaccination, but to date (April 2009), there is no vaccine available for swine (H1N1) flu.
The new swine flu virus is sensitive to the antiviral drugs Tamiflu and Relenza. The CDC recommends those drugs to prevent or treat swine flu; the drugs are most effective when taken within 48 hours of the start of flu symptoms. But not everyone needs those drugs; many of the first people in the U.S. with lab-confirmed swine flu recovered without treatment.
