Read Behe's book. Will be pretty hard for the plaintiffs' to dispute his testimony.
As someone else already pointed out, this case isn't really about intelligent design versus evolution. Behe's testimony is ultimately irrelevant. This case will be decided on the three prongs of the Lemon v. Kurtzman test. If you take the time to look over the pleadings that are posted on the district court website, you'll realize that the "purpose" prong is already lost for the Dover School Board, one of whom went on record making several remarks clearly indicating that the purpose of introducing their "intelligent design policy" was religious in nature.
I'd be willing to place a very large wager on the outcome of this trial going in favor of the plaintiffs.
Did you read the answer of the defendants?