According to study records, IL-2 has not been tested in HIV-infected children. Experience with IL-2 in pediatric populations is extremely limited. Pahwa et al. gave 30,000 units/kg daily IV to a child with severe combined immunodeficiency. This dose was well tolerated and the patient improved clinically as well as immunologically. Part A is necessary to determine the maximum tolerated dose of IL-2 in infected children. Part B will determine the efficacy of the maximum tolerated dose in infected children.