>http://205.205.57.3/WebServices/universal%20thread.wsdl?mymethod?23
>
>where mymethod is a method name and 23 is a string to pass. What is the proper way of calling a method from the browser? I basically want to test some methods which only returns some string.

There's no easy way to do this. SOAP Web Services receive POSTed xml that contains the methods and parameters, and these are not tranlatable into a URL.