MANHASSET - A Manhasset man has been a pioneer in the battle against AIDS for more than two decades. Dale Anthony, now 48, has lived most of his life with HIV and AIDS. He was diagnosed in the 1980s, when little was known about the disease. "Because I went public, I gave people the courage to deal with their own journey of living with AIDS," Anthony says. But his personal fight with the disease has gotten tougher. Anthony has spent the past two months at North Shore-LIJ treating an AIDS-related cancer that has spread throughout his body, leaving him wheelchair-bound. Anthony served on an AIDS Advisory Council for Presidents Bill Clinton and George W. Bush until he became too ill to continue.