An addition to the SWX screencast (PHP Service Browser gateway URL)
I forgot to mention during the SWX screencast that you will need to configure the gateway URL in the PHP Service Browser the first time you use it. I just made a post on the SWX web site with full instructions on how to configure the PHP Service Browser.
Unfortunately, this configuration step is currently necessary because I have been unsuccessful at getting the source code for the latest version of the service browser (which is the same one that is used in Amfphp) and/or the source for the upcoming universal service browser from Patrick Mineault. I will keep trying badgering Patrick to try and get the source so that this configuration step can be removed in future versions of SWX.
In the meanwhile I apologize that you have to jump through this hoop before you're up and running with SWX.