The purpose of this study is to compare the safety and effectiveness of three anti-HIV drug combinations. The three combinations are: (1) efavirenz (DMP 266) plus indinavir; (2) DMP 266 plus zidovudine (ZDV) plus lamivudine (3TC); and (3) indinavir plus ZDV plus 3TC. This study also examines the resistance HIV may have to these drugs and if these drugs are effective over a long period of time.