-\documentstyle[a4,makeidx,verbatim,texhelp,fancyhea,mysober,mytitle]{report}%
+\documentclass[letter,makeidx,verbatim,texhelp,fancyhea,mysober,mytitle]{report}%
%\input{psbox.tex}
+\usepackage{texhelp}
+\usepackage{fancyheadings}
+\usepackage{mysober}
+\usepackage{mytitle}
+\usepackage{verbatim}
+\usepackage{makeidx}
\usepackage{times}
\usepackage{hyperref}