Okay. Here is the relevant statute:

"§ 10.73.090. Collateral attack -- One year time limit

(1) No petition or motion for collateral attack on a judgment and sentence in a criminal case may be filed more than one year after the judgment becomes final if the judgment and sentence is valid on its face and was rendered by a court of competent jurisdiction.

(2) For the purposes of this section, "collateral attack" means any form of postconviction relief other than a direct appeal. "Collateral attack" includes, but is not limited to, a personal restraint petition, a Habeas Corpus petition, a motion to vacate judgment, a motion to withdraw guilty plea, a motion for a New Trial, and a motion to arrest judgment.

(3) For the purposes of this section, a judgment becomes final on the last of the following dates:

(a) The date it is filed with the clerk of the trial court;

(b) The date that an Appellate Court issues its mandate disposing of a timely direct appeal from the conviction; or

(c) The date that the United States Supreme Court denies a timely petition for certiorari to review a decision affirming the conviction on direct appeal. The filing of a motion to reconsider denial of certiorari does not prevent a judgment from becoming final. "

What this means, is that you have one year from the judgment to file a motion to vacate the judgment or a motion for a new trial. What you will need to do, is to prepare your motion giving the reasons why the hearing/trial should be re-opened, and that you have new evidence which you were not able to obtain before the hearing. Then you will need to file the motion with the court clerk.