In this two line example, a JangoMailSoapClient object is created, then used to invoke the method that gets a list of the email lists on your account. Download the source code for this example then start your own integration!
// first create the JangoMail soap client object
JangoMail.JangoMailSoapClient j =
new JangoMail.JangoMailSoapClient("JangoMailSoap");
// then call the getlist method and display the results
Result.InnerHtml =
j.Groups_GetList_String("Your JangoMail/JangoSMTP Username",
"Your JangoMail/JangoSMTP Password",
"<br/>", " - ", "");