You can Add Just Below Instruction.
Add Header.php
And Add
includestemplatesnew_templatetemplatestpl_hereYourFile.php
And more Details Here : http://www.zen-cart.com/wiki/index.php/Creating_new_pages
http://lifefeed.net/zencart/static_page.php
http://tutorials.zen-cart.com/index.php?article=142
http://tutorials.zen-cart.com/
http://www.radebatz.net/mano/2007/07/17/howto-creating-static-pages/
http://tutorials.zen-cart.com/index.php?article=117
http://www.zen-cart.com/forum/showthread.php?t=128705
enjoy.