FRIENDS: Pastor [Rick Warren], left, and Sen. [Barack Obama] met in Washington.; PHOTOGRAPHER: Los Angeles Times; EYE-OPENING TRIP: [Kay Warren]'s tour of Africa showed her how little was being done to help AIDS sufferers.; PHOTOGRAPHER: Allison Cox Saddleback Church; no caption; PHOTOGRAPHER: EPA; A1Obama spurs debate on AIDS and religion: Evangelicals debate the Illinois senator's speech at an Orange County church.; PHOTOGRAPHER: M. Spencer Green Associated Press; OCECUMENICAL MISSION: Some of Rick Warren's, center, evangelical peers have been critical of his AIDS work. "You can't work together with people totally opposed to what you are," said [Wiley S. Drake], pastor of First Southern Baptist Church in Buena Park.; PHOTOGRAPHER: Allison Cox Saddleback Church; OC Sen. Barack Obama asked Rick Warren for advice while writing his book.