Blood (about 3 tablespoons) will be drawn for routine tests and to measure how the drug moves around inside your body and effects your body. Your blood sample will also be tested for human immunodeficiency virus (HIV, the virus that causes AIDS), Hepatitis B, and Hepatitis C. If your test results show that you have HIV, Hepatitis B, or Hepatitis C, you will be notified and given information about counseling services. The results of your HIV, Hepatitis B, and Hepatitis C tests will be kept confidential and disclosed only as required by law. If you do not take these tests for Hepatitis B, Hepatitis C, or HIV, or if you test positive for any of these, you will not be eligible for this study. If there is more than a 2-week delay before beginning the study, these tests may need to be repeated. Within 3 days of receiving the study drug, women who are able to have children must have a negative blood pregnancy test.