On the other hand, a determination by the trial court that it has jurisdiction does not dispose of the issues and parties before the court and is not a final, appealable order, and such a determination is properly reviewable by extraordinary writ. Boillot v. Conyer, 861 S.W.2d 152, 154 (Mo.App.E.D. 1993). In short, the trial court's order dismissing Perry's petition and application was a final, appealable order, properly before this Court on appeal.