Mac or Windows?
Can you confirm that Monotype Corsiva is a true type font?
Windows. how can i determine that Monotype corsivia is a true tipe font?
In Windows XP, I can go to Settings---> Control Panel----> Fonts and see a list of all the fonts on my computer. Those that end in TTF should be true type fonts--most are these days. MTCORSIVA is true type on my computer so it probably is on yours.
Some windows printer drivers have a setting that substitutes a font in the printer's firmware for the font specified in the document. I don't know how to tell where to look for that setting, but if you go to Settings ---> Printers and Faxes and double click the icon for your computer you might spot a setting for this that you can change.