Well, you may have found some suggestions by now since your post was back at Christmastime, but I have a copy of Concrete Homes Fall 2000 that features concrete countertops. From what I gathered, you need a professional. It's new and challenging work, labor-intensive, and must be done just right. See www.concreteworks.com, www.buddyrhodes.com, and www.sonomastone.com. Good luck!