You can do it for all articles by editing article.php and changing the arguments for COM_siteHeader() and COM_siteFooter()
Text Formatted Code
* <?php
* require_once('lib-common.php');
* $display .= COM_siteHeader(); //Change to COM_siteHeader('none') to not display left blocks
* $display .= "Here is your html for display";
* $display .= COM_siteFooter(true); // Change to COM_siteFooter() to not display right blocks
* echo $display;
* ? >