From the New York Times:

...A good snapshot of this relationship comes every Wednesday, at 10 a.m., when Mr. Norquist convenes ''the Wednesday meeting'' -- an invitation-only gathering of more than 100 representatives from social, religious and economic groups in the conservative movement, as well as business and trade associations, Republican Congressional leadership offices and the major research groups on the right. These meetings, which began in 1993 to try to stop the Clinton health care initiative, are often focused these days on advancing the Bush agenda. The Bush administration has had at least one representative at every meeting.

Doesn't look like it, unless this falls under the category of "business and trade associations," which I suppose is possible.

An NPR audio story describes attending such a meeting, which implies that it's no big secret.