When you note an appeal on a case in any of the District Courts in Virginia, it takes away the conviction that you have and you start fresh in the Circuit Court. You will have a new Judge, a new trial, and perhaps even a new Commonwealth Attorney. You can choose a trial in front of the Judge or a Jury (you do not have this option in the District Court down below). If you pick a Jury and are found guilty you will be responsible for the costs of the Jury. Also when you appeal, your court costs can be higher as you have to pay the costs of District and Circuit Court if you are found guilty.