 Patients will be pretreated with simvastatin 80 mg prior to undergoing PCI. Endothelial function will be assessed before and after treatment via PAT. Our working hypothesis is patients pretreated with simvastatin, will have 1 attenuated inflammatory response, as noted by decreased levels of serum high sensitivity CRP and IL-6 and 2 improved endothelial function as compared to patients not pretreated with statin therapy. 