An important rst step in using LISREL is to be able to enter raw data and/ or import data, such as les from other programs (SPSS, SAS, EXCEL, etc.). Other important steps involve being able to use LISREL-PRELIS to save a system le, as well as output and save les that contain the variancecovariance matrix, the correlation matrix, means, and standard deviations of variables so they can be input into command syntax programs. The LISREL-PRELIS program will be briey explained in this chapter to demonstrate how it handles raw data entry, importing of data, and the output of saved les.