It depends upon your budget as well as what is under the paint on the present cabinets. If there is decent wood under the paint, simply strip it down and then refinish the wood with satin urethane. If not, or if you don't want to go to that much trouble, buy and install replacement cabinets.
First you will need to sand the cabinets to remove all the paint. Then before you can proceed with the new changes you need to clean the cabinets with some form of paint thinner. Once the cabinets have dried they should be ready to add lacquer to bring out the natural beauty of the original wood.
If it is painted wooden cabinets, you have to remove the existing painting by using sand paper. No trace of coulour should be left out. Clean the surface with a cloth and apply 2 coats of wood polish over a coat of wood primer. Your place will have different look.