The purpose of this research is to study the effects of rosiglitazone, a drug usually taken for Type II diabetes, on HIV-associated hyperlipidemia. HIV-associated lipodystrophy is a medical condition characterized by gradual changes in the distribution of body fat. The body fat located in the extremities and face disappears while body fat around the abdomen and upper back increases. Certain biochemical changes occur in association with these changes in fat distribution. Lipid levels particularly serum triglycerides are increased. HDL, the "good cholesterol" is decreased. Higher than normal level of insulin or insulin resistance is also found in this condition. This latter condition is one of the hallmarks of Type II diabetes. The protease inhibitors, a class of HIV medications, are associated with the occurrence of HIV-associated lipodystrophy. It has been suggested that a biochemical pathway known as the peripheral peroxisomal activating receptor (PPAR) gamma system is blocked leading to the onset of this condition.