Retrieving output results directly from webservices through URL

Please excuse me if I sound ignorant, but I need some help that the learning videos did not address. I am in a little bit of a problem spot. I have a Flash that have to consume XML from a webservice written in C# ASP.NET I have written a webservice with a public function that produces the needed XML w/o any input. I tested it out the only traditional way I know of by going to the exact URL and then clicking on the function name displayed and then click the Invoke button to call the function. Now, I may be missing something here. What is the best way to call the webservices' public function to directly have the function produce the output through the URL that can be passed to Flash and get the XML? I tried re-entering the URL after the Invoke button, but seems to not to work. -any help is greatly appreciated. ...