bulk SMS marketing application

We need a complete bulk sms web interface where we can:- 1. Create End Users 2. Create Resellers 3. Resellers can create further end users plus resellers. 4. Every Reseller should be able to approve sender id and assign credit. 5. Every user can import list of contacts using excel or text format. 6. Every user can send single / multiple sms at a time. 7. Every user can see live status of the sms 8. Every user can schedule the deliver of messages. Demo panel will be provided when asked. Should be web based application and I also want users to be able to buy the services to send sms from my site. If you have ready made application and solution ready. POST them with PM Your also open to suggest on this project