Tying a domain name into TypePad [updated]

So how do we tie a domain name into TypePad? I think I want to make blog.n3rd.net map to iheartmena.typepad.com. Easy enough, but it’s my understanding that I can have it not just re-direct, but actually be the new domain name. Any help would be appreciated.

I was really counting on this feature because I picked my domain name just to put a smile on the faces over at Six Apart… Now that everything is public, I don’t want to have that “stalker vibe” that would so easily come with my domain name.

Update: From the beta list email…

The most common request we’ve had from our users is wanting to know if and when we will support pointing domain names like example.com to TypePad sites like example.typepad.com. We plan to enable this feature, which we’re calling “domain mapping”, before September.