One of the witnesses scheduled to testify is Fay Vincent, the commissioner run off by owners.

The hearings are to begin on Monday, and Mr. Verniero is the only witness scheduled for the final session, on March 28.

One witness scheduled to testify is Frank Agostini, another friend of Mr. Minucci's who was initially held by the police but never charged.

Sergeant Wernick was on the list of witnesses scheduled to testify, but there had been no previous indication that he would offer such a detailed account.

Mr. Fox said he was not sure what action the committee would take if the witnesses scheduled to testify this week refused to do so.

The first witness scheduled is Randy Vataha, an attorney who represents Don Majkowski and Dave Richards, two of the plaintiffs.

With more than 40 witnesses scheduled to testify and reams of documents to be presented, the trial promises to be intricate and methodical.

Among the first witnesses scheduled is Charles A. Duelfer, the chief American adviser on Iraq's unconventional weapons programs.

Mr. Frohnmayer is among the witnesses scheduled to testify at House and Senate hearings Wednesday on the endowment's renewal.

The names of all witnesses scheduled to appear at such hearing shall be provided to Members no later than 48 hours prior to the commencement of such hearing.