I am trying to call a web service in PeopleSoft from salesforce (Apex class). The service requires a SOAP XML request with necessary security (username and password) in SOAP header.

I generated Apex classes from the WSDL following this document.

http://wiki.developerforce.com/page/Apex_Web_Services_and_Callouts

But there is not an option to create a SOAP request using the classes generated from WSDl2Apex.

Is it possible to create a complete SOAP XML HTTP request to call an external web service from an Apex class?

Is it possible to use the standard SOAP APIs in Apex to create a complete SOAP XML request in a Apex class?

Thanks,

Raji