Research Study To Test Carvedilol CR + Lisinopril Versus Lisinopril + Placebo In Patients With High Blood Pressure

Randomized, double-blind, parallel group, multicenter study of subjects with Stage 1 or 2 essential hypertension who are not at target blood pressure (\<140/90mmHg) at Baseline. Subjects will be randomized to receive either carvedilol CR + lisinopril or lisinopril + placebo. Subjects will be uptitrated over a 6 week period until target blood pressure (\<140/90mmHg) is met. The primary objective of the study is to compare the proportion of subjects who achieve target blood pressure after 6 weeks of treatment.