You mean receiving SMS messages and putting them on the web, or typing messages into a web page and sending them out by SMS, or both directions ? I advise purc

You mean receiving SMS messages and putting them on the web, or typing messages into a web page and sending them out by SMS, or both directions ? I advise purchasing a real cellular modem, such as from MultiTech, putting a SIM chip in it from a plan that offers unlimited text messaging. However, if you are trying to just whip something together quickly, you may find this useful: http://www.textmarks.com/ http://www.textmarks.com/ You can use that service to receive a text message, and then have it call a URL, and send the number and callerid and other information to your server.