I have updated my older blog post to reflect the fact that the guidance for configuring Team Foundation Server 2005 to work with WSS 3.0 is now published as an "official" TechNote on MSDN. This took a bit longer than we expected when we posted the release candidate of the guidance a few months back, but I believe it was worth the wait since it allowed us to incorporate feedback from several people in the community who followed these procedures and sent in suggestions for improving the guidance.
To access the updated guidance visit the Visual Studio Team System TechNotes site and look for TN1501 and TN1502. Additionally, if you have already followed this guidance, there is no need to make any changes. The updates were primarily cosmetic with some added text for specific error conditions you might encounter depending on your configuration.