A 48 Week Study Comparing Treatment With Saquinavir + Lopinavir/Ritonavir in Combination With Enfuvirtide HAART Versus Saquinavir + Lopinavir/Ritonavir + Other Nucleoside Combinations to See the Efficacy of These Treatments in Patients Infected With HIV-1

Inclusion Criteria: * CD4 cell count greater than 50 cells/mm\^3 * HIV-1 RNA viral load greater than or equal to 5000 copies/mL * Patients must be HIV treatment experienced * Patients diagnosed with HIV-1 infection Exclusion Criteria: * Female patients must not be able to have children or must be under effective contraceptives * Female patients who are pregnant * Have taken enfuvirtide and/or T-1249 before * Have serious kidney problems * Alcohol and/or drug abuse * Have had an organ transplant