A method and apparatus for printing accessed data over a network using a virtual machine applet accessed by a printer. To-be-printed data accessed through a network or setup command data for setting up a printer environment received from a user is transformed into to-be-printed extensible markup language (XML) data or setup command XML data, respectively. The to-be-printed XML data or the setup command XML data is transmitted to the printer. The to-be-printed XML data or the setup command XML data is interpreted via the virtual machine applet to execute printing or to set up the printer. Accordingly, data written in various kinds of languages on the Internet can be transmitted to and printed by a printer without installing a printer driver in a computer or a mobile communication apparatus like a PDA. Also, a desired printer setup by a user can be achieved without a printer driver.