mass mailer curl script

I need a bulk mailer script made. This isn't the same old bulk mailer script. It's different. see below for details on it. This script will need to post login details to a login form to set a session at an online RPG site. It will then send out a present message to all the users at the site. The site script will be exactly the same as [login to view URL] so the script will need to be based on that site. I would imagine that it would need to be coded in curl but if you know a better way then thats good. It would also be nice if you could incorporate some other features like a progress bar and such but thats not required. This script will need to be created within a day if not less. Please only bid if you know you can do this. Bottom line create a script that can perform an action the same as you logging into the site above and then sending messages to all the users. Please also take a few minutes to review the site above to see how the login/mailing system works before you bid. Thanks