The primary efficacy parameter is virologic response defined as a confirmed viral load < 50 copies/mL at Week 48 the objective of this study is to establish non-inferiority of TMC114/r versus lpv/rtv in terms of virologic response at Week 48 using a non-inferiority margin of 12%. To test this hypothesis, a two-sided 95% confidence interval (CI) of the difference in response rate between TMC114/r and lpv/rtv will be derived: If the lower bound of the CI exceeds -12%, non-inferiority will be concluded. Patients will take oral doses for up to 96 weeks of either 800/100mg of TMC114/r 1x/day or 800/200mg of lpv/rtv once daily, each in combination with TDF/FTC. (The 400/100 mg 2x/day dose of lpv/rtv will be used where the 1x/day use of lpv/rtv is not approved).