[Zope] Propblems with Install xmlMthods

Hello I have zope 2.6.1 running on my win xp. I have installed it with the win-binary. I want to use XmlMethods. According to the install-instruction I did: I had already python 2.3 on my computer so I downloaded the 4suite 1.0a3 for python 2.3 and PyXML 0.8.3 I installed both with the win-installer. I could check, that 4suite is running. I do not know how to check if PyXML is running. Then I installed XmlMethods and I had the XSL Method and the XSLT Cache Manager in ZMI available. Now, as I tried to test the test-files it says No supported XSLT processors available What went wrong? Should I have to install the 4suite in the python 2.1 installation, which came with the zope-binary? Thanks in advance for every help Stefan