I'm looking for a Web to sms script any ideas on a free or inexpensive script?

[Doug]

Generally speaking, you can e-mail an SMS to a cell phone. Your SMS e-mail address will be something along the lines of yournumber@yourcarrier, e.g. 1234567890@mail.att.com

http://sms411.net/how-to-send-email-to-a-phone/ Just set the form up to send e-mails to your SMS e-mail address.

There are a number of e-mail form plugins at http://wordpress.org/extend/plugins/

Another option is to set up a twitter account and link your phone to it. This, of course, would require the people sending you messages to also have a twitter account; but the primary purpose of twitter is to be a Web to SMS gateway.

If you want 100 percent clean SMS integration, then as previously noted, you'll need a gateway service such as ClickAtell.