To establish connection between USB Modem and software, click on 'USB Modems Connection Wizard' button.Click on 'Use Selected Device to send SMS' button to send group messages.Choose 'Import and Composing options' like Load Contacts from File, Add or Paste numbers Manually and send unique or personalized SMS to every contact using Excel.Now, select option either "Import Numbers and their respective messages from EXCEL File" or "On the basis of EXCEL file contents, create personalized Dynamic messages".Browse the excel file which you want to use to create dynamic and personalized messages for each contact. Click on 'Next' button.Here, Dynamic Message Import Wizard shows selected file column information. Now, click on 'Finish' button.Progress bar displays current running status of SMS sending process.