This archive should contain 8 files (including this one). The ghquadm.ado file simply is a modification of the ghquad program included in Bill Sribney's rfprobit. ghquadm.hlp explains how to use ghquadm.ado. reop_ll.ado and reopc_ll.ado are called by reoprob.ado for likelihood computations. reoprob.ado is the main program. reoprob.hlp explains how to us reoprob.hlp. sg158.tex is the update. Only reop_ll.ado and reopc_ll.ado have been modified from their original version (sg158: STB-59). Regards, Guillaume R. Frechette Ohio State University Department of Economics 410 Arps Hall 1945 North High Street Columbus, OH 43210-1172 Tel: (614) 688-4140 Fax: (614) 292-4192 e-mail: frechette.6@osu.edu http://www.econ.ohio-state.edu/frechette/