For anti-doping officials, Lance Armstrong's admission of cheating was only a start. Now they want him to give details — lots of them — to clean up his sport.

Armstrong's much-awaited confession to Oprah Winfrey made for riveting television, but if the disgraced cyclist wants to take things further, it will involve several long days in meetings with anti-doping officials who have very specific questions: Who ran the doping programs, how were they run and who looked the other way.

"He didn't name names," World Anti-Doping Agency President John Fahey told The Associated Press in Australia. "He didn't say who supplied him, what officials were involved."