This method shows a window with both visible frames, it tries to print, but the progress bar never finishes, and when you cancel, itīs printed!!
view with visible frame;

This other method shows a window with the page to print inside a hidden frame. It tries to print but it doesnīt work, never. But itīs strange because itīs located in printer queue.
view with hidden frame;

IMPORTANT: Itīs needed to RESTART Netscape beetwen each tests, because netscape doesnīt work well after the tests.
NOTE: this is tested on Windows 2000 and XP:

with Netscape 7.0:: Mozilla/5.0 (Windows; U; Windows NT 5.0; es-ES; rv:1.0.1) Gecko/20020823 Netscape/7.0

with Netscape 7.01:: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01

with Netscape 7.0:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0