Client Server 101

So, I create an object in GameConnection::onClientEnterGame(), like so:

%this.myObject = new MyObject() {
dataBlock = someDatablock;
};

I then want to call some function on this object from my client code when a particular key is pressed. But how? I have seen code that tells me to create a global variable on the server side and access it that way, like so:

// On server
$myObject = %this.myObject();

// On client
function myKeypress (%val) {
$myObject.myFunction(%val);
}

This works fine, but only if I have client and server on the same machine - it's not a proper solution.

I've also seen it suggested (vaguely and in passing, so maybe my interpretation is wrong) that I could replace the global var with something like this:

function myKeypress (%val) {
%this.myObject.myFunction(%val);
}

For this to work, it would seem to imply that the client code is implicitly running within the context of a GameConnection object, and also that there is some built-in scheme for remote method invocation. But in fact, in my experiments it just complains about a missing object...

Could somebody please give me some guidance as to what needs to be done here? I can see how I could cobble together a way do this using commandToServer, but is there a cleaner, more object-oriented way to access server objects/methods from client code?

Also, if there's a resource that discusses the detail of client/server issues in Torque script coding, I'd be delighted if someone could point me at it - I've hunted around in vain.

Thanks,

Wayne