 Patients will be randomly assigned to one of three study arms. In Arm A, patients will receive lopinavirritonavir LPVr twice daily and efavirenz EFV once daily before bed. Arm B patients will receive LPVr twice daily, lamivudine 3TC once daily, plus either stavudine extended release d4T XR once daily, zidovudine ZDV twice daily, or tenofovir disoproxil fumarate TDF once daily. Patients in Arm C will receive EFV once daily before bed and 3TC plus either d4T XR once daily before bed, ZDV twice daily, or TDF once daily before bed. 