<qa>  What is the potential and dose-limiting toxic effects of interleukin-2?III. Determine the toxic effects of this drug in these patients. IV. Determine the feasibility and dose-limiting toxic effects DLT of interleukin-2 IL-2 when administered with IL-12 in patients who have not shown disease progression after 12 weeks of IL-12 and in those who have shown disease progression after 12 weeks of IL-12. 