using fonts in libpdf

[bees]

i'm using the following code:

	pdf_set_parameter($pdf, "resourcefile", "/usr/www/users/cal/includes/fonts/pdflib.upr");
	$font = pdf_findfont($pdf, "Courier", "winansi", 1);
	if ($font){
		pdf_setfont($pdf, $font, 30);
	}

but am encountering this error:

Fatal error: PDFlib error: Outline data for font 'Courier' not found

(my pdflib.upr contains correct paths to the .afm files)

thanks for any advice you have