ROYAL OAK, Mich. (AP) _ Madonna is lending her name to this year's AIDS Walk on her home turf. Organizers of the Detroit-area charity event hope she does even more.

The pop superstar, who grew up in Bay City and the Detroit suburb of Rochester, has agreed to serve as spokeswoman for the Sept. 19 fund-raiser in Royal Oak, AIDS Walk Detroit president Jim Domanski said.

Madonna offered her support through an organization that represents AIDS fund-raisers nationwide, Domanski said.

As celebrity spokesperson for the ninth 5-kilometer walk, her name appears on letters and postcards included in more than 8,000 registration forms mailed out Friday.

Organizers hope she'll also be able to attend the event, but her final role remains unclear. Domanski said after Madonna agreed to serve as spokesperson for the 1998 AIDS Walk in Los Angeles, she showed up at the event and spoke to a crowd of about 25,000.