Macromedia has released an AS2 version of their Flash Remoting Components. It also includes Flash Remoting Components ActionScript 1.0 for Flash MX 2004 and Flash MX Professional 2004. You can download them here. The most exciting thing here is that, they have also released the source code for the same.
Macromedia Flash Remoting for Flash MX 2004 ActionScript 2.0
June 7, 2004
Updates to the Flash Remoting Components include:
The Flash Remoting ActionScript API has been updated to comply with ActionScript 2.0. The new RemotingConnector component allows you to work directly with the new data binding features in Flash MX 2004 Professional Significant improvements to the Documentation, including new ASDoc format and sample applications. These ActionScript 2.0 components should be used for all Flash MX 2004 and Macromedia Flash MX Professional 2004 projects, especially if you are working with ActionScript 2.0 in your Flash project. You can still use the ActionScript 1.0 components below, if you like, but the ActionScript 2.0 components represent the best integration with Flash, Remoting, and ActionScript.