Thanks houstonlively & kreativ,

Heck, I tought that it might be kind'a cool to have this if the service can be had for free and without sponsor messages. We just moved back to the USA from Germany last month and our teenage son has a girlfriend in Germany. They love to send SMSs back and forth all of the time ... even though they have computers with email, chat, greeting cards, communities, and whathaveyou. It's just another toy for people to use ...
I checked out the clickatell link but see more find that one to be too much "in your face" which is why I was looking for something simple like that iFrame which coild be modified to suit our needs. Ah well, thanks for your time. 'later ...