[Zope] XML-RPC and REQUEST object

Hi, I am still in the reading phase and trying to get into xml-rpc to integrate zope with M$. As I look at the Products directory I see lots of functions written in a way depending on the REQUEST object containing all the data. Now If I call up a python method Can I assume that the REQUEST object is filled up with the parameters that I pass via XML-RPC? if so what is the mapping ( structs, arrays and base64 encoded data) ? Sedat Yilmazer Kibele Iletisim Sis. ve Serv. Ltd.