Wow. Joel has really outdone himself on this one. What a great post; this is another one to bookmark sports fans. I'm seeing a larger number of customers interested in these scenarios and for good reason....I know, I know, maybe I'm only 99.99999% objective.
Planning, Designing & Securing an Extranet and Internet Facing WSSv3 and SharePoint Server 2007 Environments
You might also want to checkout our ISA 2006 offering. For a more general description, you can go here. Our whole remote access story is going to be even stronger now with the Whale Communications acquisition.