you are getting that because the download KB907306 is giving server errors 400 and up meaning most likely they pulled the update off the server and are not going to put it back on. This is common to all M$ abandonware.
This update installs the Microsoft Data Access Internet Publishing Provider component. The Microsoft Data Access Internet Publishing Provider component makes it possible to connect to a Web server as a Web folder when the native Web Client service cannot.
This update is kinda moot anyways it will apply to almost no one so, I will remove it.
Edit: I removed the offending update I however cannot seem to find my authoring tool for RTI files. Well, not at this moment anyways. I didn't look to hard but, anyways just ignore the non-official state until either I or WAC get to it.