In the initial phase of this study, HIV-infected patients with CD4 counts between 200 and 500 were randomized to receive either IL-2 alone by continuous IV infusion for 5 days every 8 weeks, IL-2 plus anti-TNF antibody, or IL-2 plus thalidomide. The primary endpoints of this study are safety and tolerability of the IL-2/TNF inhibitor combination. Secondary endpoints will include changes in CD4 counts, frequency and severity of IL-2 related side effects, changes in serum TNF levels, and plasma viral load changes. The study period is one year, with an optional extension period to follow. Enrollment was for up to forty-five IL-2-naive patients.