If eligible subjects decide to participate in this research study, they will be randomized, which is like picking chances from a hat, to get RCV (Racivir®) alone, 3TC (lamivudine, Epivir®) alone, or RCV and 3TC (lamivudine, Epivir®) in combination. This is a “double-blind study”. This means that neither the subject nor the study doctor and study staff will know if subjects are receiving RCV (Racivir®), 3TC (lamivudine, Epivir®), or RCV (Racivir®) and 3TC (lamivudine, Epivir®). This needs to be done to make sure the researchers obtain the information needed to see if RCV (Racivir®) is safe and as effective as 3TC (lamivudine, Epivir®). In case of an emergency, the study doctor will be able to find out immediately what study drug subjects were receiving. With this exception, by signing the consent form subjects agree that they will not be able to find out what medications they are taking, because this is a “double-blind” study, it is necessary to use placebo tablets. A placebo is a tablet that does not contain any active drug, but is made to look just like the study drug.