How to add image in excel?

 CarlosAg.ExcelXmlWriter.Workbook book = new CarlosAg.ExcelXmlWriter.Workbook();  // Specify which Sheet should be opened and the size of window by default
        book.ExcelWorkbook.ActiveSheetIndex = 1;
        book.ExcelWorkbook.WindowTopX = 100;
        book.ExcelWorkbook.WindowTopY = 200;
        book.ExcelWorkbook.WindowHeight = 7000;
        book.ExcelWorkbook.WindowWidth = 8000;

CarlosAg.ExcelXmlWriter.Worksheet sheet = book.Worksheets.Add(strReportName); // Add a Worksheet with Report name
        sheet.Options.PageSetup.Footer.Data = "Powered by Kinetics" + new String(' ', 30) + "Confidential" + new String(' ', 30) + "Page : &P of &N ";
        sheet.Options.PageSetup.Layout.Orientation = CarlosAg.ExcelXmlWriter.Orientation.Landscape;
        sheet.Options.GridLineColor = "#000000"; 

        for (int intColCnt = 0; intColCnt < 125; intColCnt++) // column settings
        {
            sheet.Table.Columns.Add(new CarlosAg.ExcelXmlWriter.WorksheetColumn(75));
        }
        
        CarlosAg.ExcelXmlWriter.WorksheetRow row = sheet.Table.Rows.Add();
        CarlosAg.ExcelXmlWriter.WorksheetCell cell3 = row.Cells.Add("");                
        row = sheet.Table.Rows.Add();
        
        // row.Cells.Add("images\\actions\\BBlogo.gif");
       // row.Cells.Add(" ");
       // row.Cells.Add(" ");
        string imagepath = Request.PhysicalApplicationPath + "images\\ExertLogo.gif";
        book1.addPicture(0, 0, 2, 2, imagepath);
        row.Cells.Add(new CarlosAg.ExcelXmlWriter.WorksheetCell(strReportName, "Company"));
        row = sheet.Table.Rows.Add();
        CarlosAg.ExcelXmlWriter.WorksheetCell cell = row.Cells.Add("");
        row.Cells.Insert(1,new CarlosAg.ExcelXmlWriter.WorksheetCell(imagepath));
       // row.Cells.Add(imagepath);
       // cell.StyleID = "Company";
       // cell.MergeAcross = 2;        
      //  row.Cells.Add(" ");
      //  row.Cells.Add(" ");
        row.Cells.Add(new CarlosAg.ExcelXmlWriter.WorksheetCell("Report Run Datetime : " + DateTime.Now.ToString("dd/MM/yyyy HH:mm:ss"), "Reports"));
        row = sheet.Table.Rows.Add();
     //   row.Cells.Add(" ");
    //    row.Cells.Add(" ");
      //  row.Cells.Add(" ");        
        CarlosAg.ExcelXmlWriter.WorksheetCell cell2 = row.Cells.Add();
     //   cell2.StyleID = "Reports";
    //    cell2.MergeAcross = 2;
    //    cell2.MergeDown = 3;
        row.Cells.Add(" ");
        row.Cells.Add(new CarlosAg.ExcelXmlWriter.WorksheetCell("Report Run By : " + Session["strUsername"].ToString(), "Reports"));
        row = sheet.Table.Rows.Add();
        row = sheet.Table.Rows.Add();
        row = sheet.Table.Rows.Add();