A Comparison of Three Anti-HIV Drug Combinations Containing Saquinavir Soft Gelatin Capsules Used in HIV-1 Infected Patients

To determine the proportion of patients whose plasma HIV-1 RNA level falls below the level of detection (\< 400 copies/ml) at week 24 of study therapy. To determine the absolute change in plasma HIV-1 RNA during the 24 weeks of study treatment. To collect safety data on the treatment regimens. AS PER AMENDMENT 12/12/97: To compare the virologic response of Fortovase (FTV) (Saquinavir) Soft Gel Capsule (SGC) tid plus nucleoside reverse transcriptase inhibitors (NRTIs) versus FTV bid plus NRTIs. Further, to compare the virologic response of FTV tid plus NRTIs versus FTV bid plus Nelfinavir bid plus a NRTI with respect to: the percentage of patients whose plasma HIV-1 RNA level falls below the Amplicor assay level of detection (\< 400 copies/ml) at week 24 and week 48.