Thanks to Kathy Forste
This is from october 2007 "Current Magazine" (PBS's inhouse publication) for PBS member stations to buy Olivia's concert. This is a full page ad (11x17"). In the ad it says that Olivia will be hosting the pledge event! This means Olivia will be not only in the concert part of the program but she will also be pitching the pledge levels to the viewers during the pledge breaks.
It is airing on PBS in the New York/Long Island area (WLIW) October 2nd and on some other PBS stations in December.