CSV to XLS (Excel) Converter allows you to convert your CSV files to Excel format (xls, xlsx). The converter supports both 95-2003 MS Office format and 2007-2010 format too.
The program supports a command line interface. So, you can run it with necessary parameters in a batch mode from the command line or from Windows scheduler without human beings.
Besides, the Site license includes a DLL which you can use from your own application.