Ummm, WinVNC is what the AT&T guys distribute. Specifically, I'm using v3.3.3r2.

And, to be clear, you're saying that the scaling doesn't work, not the whole connection, right? If it's just the scaling, then there's nothing I can really do about it at this point. There's no function on the server side to enable that sort of scaling of which I'm aware. The client should just display it differently. Does your client successfully scale another server? Doing server-side scaling is going to require some serious overhauling of the server (at least to do it without generating insane amounts of network traffic -- and it uses too much as is).