Information found on URL http://travel.state.gov/travel/cis_pa_tw/cis/cis_1079.html

On December 31, 2005, the U.S. Government will begin to phase in new passport requirements for U.S. citizens traveling in the Western Hemisphere. On that date, U.S. citizens traveling to the BVI must have a valid U.S. passport. By December 31, 2007, all U.S. citizens will be expected to depart and enter the United States on a valid passport or other authorized document establishing identity and U.S. citizenship. The Department of State strongly encourages travelers to obtain passports well in advance of any planned travel. Routine passport applications by mail take up to six weeks to be issued. For further information, go to the State Department's Consular website: http://travel.state.gov/travel/cbpmc/cbpmc_2223.html.

Until December 30, 2005, for tourist stays of up to six months, U.S. citizens need a valid U.S. passport or other proof of U.S. citizenship (original or certified birth certificate, Certificate of Naturalization or Certificate of Citizenship as well as photo identification), onward or return tickets, and sufficient funds for their stay. Upon initial entry, no more than 60 days will be granted. At the end of 60 days, visitors must report to the Immigration Department's main office in Road Town for an extension. Extensions of up to 90 days are issued at the discretion of the Immigration Officer subsequent to an interview. For further information on travel to the British Virgin Islands, travelers should contact the BVI Department of Immigration at 1-284-494-3471. Visit the Embassy of the British Government web site at http://www.britainusa.com for the most current visa information.

Hi,
We just got back from St John yesterday. We only used our birth certificates and driver's license. We also used them on our BVI day trip and had no problems.