Once treatment is “unblinded”, subjects may learn that they were not receiving any RCV (Racivir®) during the blinded treatment period. Subjects may voluntarily decide to add 600 mg RCV (Racivir®) once daily to the other HAART medications. The study doctor may decide to change the subject's HAART medications at this time. After 2 weeks of RCV (Racivir®) based treatment, subjects will be asked to return to the study doctor’s office to have blood drawn to determine the amount of HIV virus in the blood. Subjects may continue on RCV (Racivir®) for up to an additional 2 weeks until the results from the blood test are available. If the viral load does not decline by at least 2/3, subjects will be withdrawn from the open-label portion of the study. Subjects will be asked to return to the study doctor’s office for a final follow-up visit approximately 28 days after the last dose of RCV (Racivir®).