C#

// Quantum sort algorithm implementation
while (!sorted) 
     ;

using Excel;
using Microsoft.Office.Core;
using System.Reflection;

namespace whaterever
{

class ExcelToWhatever
{
Excel.Application _excel = null;

		[STAThread]
		static void Main(string[] args)
		{
			ExcelToWhatever app = new ExcelToWhatever();

		}

		public ExcelToWhatever()
		{
			_excel = new Excel.ApplicationClass();
			_excel.Visible = true;

			try
			{
				Process();
			}
			finally
			{
				_excel.Quit();
			}
		}

		void Process()
		{
			Workbook workbook = _excel.Workbooks.Open(@"whatever.xls",
				Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,
				Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value);
			ProcessSheet((Worksheet)workbook.Worksheets["sheet1"]);
		}		
		void ProcessSheet(Worksheet worksheet)
		{
				Range aCell = (Range)worksheet.Cells[1, 2];
				string cellText = aCell .Value2.ToString().Trim();
		}

}

}

---

"When the only tool you have is a hammer, a sore thumb you will have."

// This method will convert a column number to the excel letter.
// 1 = A, 2 = B, 3 = C, ..., 27 = AA
public string ConvertExcelIndexToLetter( int column ) {
			
    System.Text.StringBuilder value = new System.Text.StringBuilder();
    const int BASE_VALUE = 26;
    int modularBase;

    while ( column != 0 ) {
    
        if( column == ( ( column / BASE_VALUE ) * BASE_VALUE ) ) {

 	    modularBase = column - ( ( column / BASE_VALUE ) - 1 ) * BASE_VALUE;
	    column = ( column / BASE_VALUE ) - 1;
	}
	else {

	    modularBase =  column - ( ( column / BASE_VALUE ) ) * BASE_VALUE;
	    column = ( column / BASE_VALUE );

	}

	value.Append( ((char)( modularBase + 64 )).ToString() );

    }
			
    return value.ToString();

}

// always remember to clean up COM objects with the Marshal class.
// I have had problems with Excel 2000 & XP not closing.  Make sure
// you call the ReleaseComObject for every COM object.
private void NAR(object o){
    try {

	System.Runtime.InteropServices.Marshal.ReleaseComObject(o);

    }
    catch{ }
    finally{
        
        if (o != null ) o = null;

    }
}