Please recommend a free application compatible with Windows 7 that helps me schedule and send bulk SMS offline using my SIM card without additional charges (charges other than the usual messaging charge applied by the network provider).
There is an application called DRPU Bulk SMS. You can download a trial copy of the application through the database of Software Informer. Access the page then click on the big green download button. Wait a few seconds and then download the software. Install it and click on Mobile Connection Guide to set up your phone.
Note: The phone needs to be installed using its own PC Suite and drivers.