Debbie, I bought my stamp about 4 years ago in WH Smiths you buy the stamp and in the box is a form to send back to the company, I designed a fairly simple one on the computer with my name and phone number and put it all in an oval. You send this off to the company and receive the rubber stamp a few day s later and then follow the instructions to fit it into the stamper - easy and not very expensive really.
Kate x