An Open Label Study of MKC-442 in at Least Triple Drug Combination in Patients Previously Treated With Nucleoside Reverse Transcriptase and Protease Inhibitors and Who Are Naive to Non-Nucleoside Reverse Transcriptase Inhibitors

The purpose of this study is to see if it is safe and effective to give MKC-442 plus at least two other anti-HIV drugs to patients who have never been treated with nonnucleoside reverse transcriptase inhibitors but who have been treated with nucleoside reverse transcriptase inhibitors and protease inhibitors. This study also determines how long a drug combination including MKC-442 is effective.