угу ... как выяснилось - да.

Код:
#include "NetServices.as"
var myURL = "http://localhost/flashservices/gateway";
var myServicePath = "HelloWorld";
myResult = new Object();
myResult.onResult = function(data){
trace("Data received from Server : " + data);
}
myResult.onStatus = function(info){
trace("An error occurred : " + info.description);
}
System.onStatus = myResult.onStatus;
var myServer = NetServices.createGatewayConnection(myURL);
var myService = myServer.getService(myServicePath, myResult);
myService.write("select `item` from `menu` where `id` = 1");