SOAP call - how?

[_AnonymousUser]

Hello all,
I am quite new to Talend but it looks very promising.
However, trying to implement a simple soap call (I'm using TOS 4.0.0 java, but could just as well use perl) I don't see how I should implement the soap call to http://www.wentzel.nl/_public/webservices/C4Service.changer as such
<?xml version="1.0" encoding="UTF-8"?>
<SOAP:Envelope xmlns OAP-ENC=" http://schemas.xmlsoap.org/soap/encoding/" SOAP:encodingStyle=" http://schemas.xmlsoap.org/soap/encoding/" xmlns OAP=" http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi=" http://www.w3.org/1999/XMLSchema-instance" xmlns:xsd=" http://www.w3.org/1999/XMLSchema">
<SOAP:Body>
<logon xmlns=" http://www.changer.nl/C4Service">
<username>anonymous</username>
<password/>
<project>lnzIevdpYv3UOle9NMfQKfWR8EGbnILdVQVhPCdPqPA%3D</project>
</logon>
</SOAP:Body>
</SOAP:Envelope>
into the tWebServiceInput component.
two problems: I don't see what the "method" (Asked for in the component Basic Settings) is - could it be Logon?
Also, I don't see where I should put the SOAP Envelope.
Is tWebServiceInput the right component for this? tXMLRPCInput offers me the same questions.
With regards,
Tijmen