To delete rows 6-8 and 10 from a worksheet entitled Sheet1 in the workbook "C:\ExcelFiles\Summary.XLS" the following syntax would be used:
ConvertXLS.EXE /S"C:\ExcelFiles\Summary.XLS" /T"C:\ExcelFiles\Summary.XLS" /P107 /1"Sheet1" /2 6-8,10 /3 FALSE
The /S and /T switches specify input and output workbook respectively, which in this case is the same workbook. You can optionally keep the input file unchanged by specifying a different name or path for the output file.