[Zope] calling standart_html_header in python script

Hi, I am using plone, & Zope. I need to call the standard_html_header & standard_html_footer (both are dtml methods in plone skins), how do i call these in the python scripts. i had tried it this way, context.standard_html_header(context,request) context.standard_html_footer(context,request) but doesn't work or give any error i had done this based on the following page http://www.zopelabs.com/cookbook/992031125 what do i do now? plz help me Thanks Harish ________________________________________________________________________ Send free SMS using the Yahoo! Messenger. Go to http://in.mobile.yahoo.com/new/pc/