Please note that natives of many countries are not eligible for this visa program: "For DV-2013, natives of the following countries are NOT eligible to apply because the countries sent a total of more than 50,000 immigrants to the United States in the previous five years: BANGLADESH, BRAZIL, CANADA, CHINA (mainland-born), COLOMBIA, DOMINICAN REPUBLIC, ECUADOR, EL SALVADOR, GUATEMALA, HAITI, INDIA, JAMAICA, MEXICO, PAKISTAN, PERU, PHILIPPINES, SOUTH KOREA, UNITED KINGDOM (except Northern Ireland) and its dependent territories, and VIETNAM. Persons born in Hong Kong SAR, Macau SAR, and Taiwan are eligible..."
For DV-2013, natives of South Sudan and Poland and now eligible for selection, while Bangladesh natives are now ineligible.
The 2013 lottery will enable 50,000 individuals and certain family members to immigrate to the United States from a pre-selected list of countries whose rates of immigration to the U.S. tend to be low. The lottery offers a rare opportunity for qualified applicants to immigrate to the United States based on their education and/or work or related experience without the need for a family member or employer sponsor in the U.S. Electronic entries for the 2013 lottery will be accepted between noon (EDT) on October 4, 2011 and noon (EDT) on November 5, 2011. Entrants may verify their status and whether they have been selected starting in May 2012, and all green cards available through the DV-2013 Lottery must be issued by September 30, 2013.
To access the Diversity lottery instructions and free online application go to http://travel.state.gov