Sears, Lowes and Home Dump all do refacing if you want to go that route. Depending on what you have now, it may not be work refacing but just have them rolled with a good quality primer like Kilz. Then put an enamel top coat on them. It is labor intensive and you need to know how to paint and remove cabinet doors etc.
As far as the concrete countertop is concerned, their is a book on the markt by some Korean person who gives detailed instructions on how to get this installed. Major weight on the cabinets so you want to be sure they are well supported before even thinking about this install. I would think one of the synthetic laminates or silestone counters would be more cost-effective.