[Zope] Help with XML Document example in Zope Book

Iam a new zope user.I am using python scripts to access xml documents but i am not able to find the XML document type in the object list.Which program should i download from the zope.org site to fix this problem.Also pls send some information on how to use XML documents with Python scripts and DTML methods(with examples).Iam working in windows NT platform but i would like to know how to use it in LINUX also.