[header] How to install a new cabinet drawer front [title] Cut off all of the wood that extends out from the drawer box with a handsaw so that all sides are flush with the drawer box. [step] Solid cabinet drawer fronts come in 3 sizes and will fit over most existing drawer boxes. [substeps] Clamp the drawer to keep it from moving while you cut if desired. 
If the old drawer front is in 2 pieces, you will want to remove the screws or nails that attach the decorative face panel and discard it. [title] Drill pilot holes on the inside of the new drawer front.