Two SMS Software using GSM Modem

We want a Two way Bulk SMS sending (using GSM Modem) software to be developed using open source or proprietory .NET library(SMSLib). # The application should work with popular GSM Modems. # Should be able to create user groups # Should be able to send bulk SMSs. # Should be able to send one to one or one to many messages. # Should popup message when there is any incoming message. # Database to be used for storage of data should be MySQL. # Two way SMS should be possible. # Interface should be similar to Yahoo Messenger. # Ability to import userlists from Access,Excel,CSV and from XML files *Library to be used is smslib [[login to view URL]]