[Zope] How to eliminate the traceback in the error message screen?

When i key in the duplicate record ZOPE will prompt out the duplicate error message, actually i can just modified the top part of this error message screen but i want to eliminate the traceback show on the bottom of the page but i dont know where to modify it. Please let me know as soon as possible. Thank You very much!!!! _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.