MK0518 in the Treatment of HIV-Infected Patients Switched From a Protease Inhibitor Regimen (0518-033)(TERMINATED)

Inclusion Criteria: * Patient is at least 18 years of age * Patient is human immunodeficiency virus (HIV) positive * Patient has documented Human Immunodeficiency Virus (HIV) RiboNucleic Acid (RNA) \<50 copies/milliliter (mL) for at least 3 months while on a KALETRA based regimen * Patient has been on a KALETRA based regimen for at least 3 months without a change in background antiretroviral therapy * Patient has no documentation of HIV RNA \>50 copies/mL for at least 3 months while on the KALETRA based regimen Exclusion Criteria: * Patient is or plans to become pregnant, or is nursing a child * Patient plans to donate eggs or impregnate/donate sperm * Patient is receiving Stavudine (d4T) as a component of the background antiretroviral therapy * Patient is currently receiving a second protease inhibitor in addition to KALETRA * Patient is currently receiving, or has received in the past twelve weeks, treatment for the management of elevated lipids * Patient has used another experimental HIV-integrase inhibitor * Patient has a current (active) diagnosis of acute hepatitis due to any cause