Another sample request

Hi, I'm a SOAP newbie and I have som problem with nusoap and wsdl. I've made an extremely simple soap-service in nusoap that basically takes a string, does a db-lookup and returns a matching string. Works just fine. I also have made a client in nusoap to communicate with it and it works ok to. I've created a wsdl file following examples and documentation from w3c and different sources on the web. Using a program called xml-spy I can read the wsdl-file and generate a request that I send to the service and I get a correct response. But there is no way that I can create a client in nusoap that uses the wsdl-file. I cannot specify the wsdl-file when i create the service either... I'm probably doing some very basic error because I don't really understand what I'm doing ;-) If anyone has a working example that I can have a look at I would be extremely grateful!! Thanks in advance!