Patients 18 years of age and older with advanced solid-tumor cancers (kidney, breast, lung, sarcomas and others) that do not improve with standard treatment may qualify for this study. Candidates will have a physical examination, including blood and urine tests, electrocardiogram (EKG) and echocardiogram, DTH skin test (to test the function of the immune system), chest X-ray and lung function tests to determine eligibility. Bone marrow biopsy and imaging procedures such as CT and MRI scans may also be required. Patients over 50 years old will also undergo exercise stress testing.