[Alug] OT - SMS

(OT - but ALUG appears to include a lot of people with varying skills) Does anyone know of the machine requirements to handle incoming/outgoing SMS messages? I am guessing a telephone line, modem and basic software to convert incoming SMS calls to text to be stored on the local machine. I am thinking of a competition like system: * People are asked to text a number with entry answer * System picks up the number/entry (and stores them in a db) Competition winner is chosen randomly and informed by outgoing SMS message. How is this normally done, e.g. radio show comp. entries? Can this be done in Linux? Ashley