Sms Integration - Theming - File Protection

I have a script that allows an admin to match various books with various gifts and then alert the book authors via email when the book/gift choice is made. The script comprises : The Login Form An Admin interface for entering the book details An Admin interface for managing admins The display page of the book details The email form. Requirements: - At the moment I'm only able to email the authors. I would like to be able to sms them also. I'll require a sort of plug and play sms integration because although I have a bulk sms operator I use at the moment, they can be a bit unreliable. So I'll need to be able to switch to another provider if necessary. - The script is very basic with regards to theming. I have some free admin themes gotten online and also thinking of purchasing one on codecanyon. I would like these used to theme the files - Security and license Authentication: I would require that you check the script for any security lapses. I would also like the file to be protected. The script is for renting out to certain organisations on a periodical basis (monthly, quarterly, etc), so I would require authentication means that can be set to expire. - Complettion: The script lacks 3 text area fields that would need to be added. A bit of money has already gone into getting the scripts to where it is now so I would appreciate reasonable quotes. Thank you.