In the state I practice in, a power of attorney only requires that you execute the proper forms, the court is not involved at all. I doubt that Georgia is different, since having a court approve powers of attorney would take up hours of court time each week. Since you will need the proper form anyway to make it legit, I would advise you to call a lawyer. It should not cost very much to have a lawyer draw up a power of attorney for the purpose you need.
It is not possible to have the power of attorney without going to work since you need to file with the county clerk. You have to fill out a form which outlines the powers that you are giving to the person and other details too. Once you fill them in you, need to file it as there are states which may find it invalid until filed. This is as stated at http://www.ehow.com/how_12695_give-someone-power.html.