@ letter 8.5in 11in @+ %%BeginPaperSize: Letter @+ letter @+ %%EndPaperSize
\documentclass[letterpaper]{article}
latex myfile.tex dvips -G0 -t letter -Ppdf myfile.dvi -o myfile.ps ps2pdf -dPDFSETTINGS=/prepress -dNOPAUSE myfile.ps myfile.pdf