I would like to receive the following information: 1. Cost of approximately 19000 smart cards (rewritable) 2. Cost of approximately 5500 reader/writers (windows platform) 3. Does the package of readers & smart cards include an initial operating system for study and further development of our own applications? 4. What kind of different models do you have for smart cards and for reader/writers and what would be he main advantages of each model as well as cost differences.