porting an sms add-on

Hi, I'm looking to port an osCommerce add-on to Zen Cart. Basically it sends the store owner an sms message when an order is placed at their shop. I'm hoping someone can guide me a little here, I've figured out how to install the module as a payment module, but I'm not sure if that will work since it really isn't a payment module at all. All it needs to do is include a file that I've written when an order is placed. Any help with this would be appreciated.
Thanks

Have you looked in the Downloads section?

At the top of the screen towards the left is a link called "downloads." Search for "SMS on Sale."

Here's the help:
http://www.thatsoftwareguy.com/zencart_sms_on_sale.html

Twitter and IWantSandy integration are also described for people who don't have easy access to an email to SMS gateway.

Thanks for the replies. I have figured out how to set it up.

The module I've made lets you customize the message to be sent to add information about the order that has been placed. Is there anywhere that I can get a list of all the information available about the order at the time of confirmation of the order?