Tim, I might be able to help you define requirements and develop the system. If you are interested please contact me off-list to the email address in the bottom of this email. Regards, Mauricio Jancic Janso Desarrollos Microchip Consultant Program Member info@janso.com.ar www.janso.com.ar +54 11 4542 3519 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist