The trial of Conrad Black, former media baron, begins with jury selection Wednesday and court officials are bracing for a flood as almost 450 members of the world press are expected to observe the trial. Black has been charged with mail and wire fraud, money laundering, obstruction of justice, racketeering and criminal tax violations. If convicted, he faces up to 101 years in prison. Longtime Black associate David Radler is expected to be the prosecution\'s key witness. Radler can provide an inside view of the alleged misdeeds but could also be the prosecution\'s biggest weakness, said Peter Henning, a law professor at Wayne State University. \"Every skeleton in his closet is going to come out,\" Henning said. \"It\'s not like they don\'t know who this guy is.\"