Apply wood stripper with a paintbrush following the manufacturer's directions.
Remove the stripper with a stiff putty knife and steel wool. Repeat this process until all of the paint, lacquer or old stain has been removed.
Fill any deep scratches or dent with stainable wood putty. Allow the putty to dry then sand to a smooth finish.
Sand the entire armoire to a smooth finish. Clean the armoire with a damp rag to remove any sawdust.
Apply a thin coat of wood stain with a rag. Allow the stain to dry, lightly sand, and then apply a second coat.
Paint the armoire with polyurethane using a foam paintbrush. If the armoire will be exposed to water or other damaging elements, apply a second coat.