fails while producing an incomprehensible error message. This is because under Windows ps2pdf is implemented as a batch file which does not allow the character = to be used. In this case modify the command tops2pdf -dCompatibilityLevel#1.4 -dMAxSubsetPct#100 -dSubsetFonts#true -dEmbedAllFonts#true -sPAPERSIZE#letter sample.ps sample.pdfand it will work like a charm.This was tested with MiKTeX 2.3 and Ghostscript 7.04 and more recently wth MikTeK 2.8 and Ghostscript 8.6.