Before you can start treatment on this study, you will have "screening tests." These tests will help the doctor decide if you are eligible to take part in this study. You will have a complete physical exam. Blood (about 6 tablespoons) will be drawn for routine tests and to test for the amount of fat in the blood. You will have a chest x-ray, bone scan and a 2-D echocardiogram (a test to evaluate the pumping function of the heart). You will have a computed tomography (CT) scan of the chest and abdomen (stomach area). Women who are able to have children must have a negative blood (about 1 tablespoon) pregnancy test.