[Zope] External Method in Zope

hi, I am using Zope-2.8.1-final and also added zoperl-1.0.beta5 for perl support . I wrote a Perl module which edit files the file access permission is only to root and i want to invoking the module as onther user . by some way i want to invoke the perl interpreter as root for my user. and i also want to know how the zope call external method. please help me!!