oledb insert into problem

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C#

Hi,

I am Simone and have a problem using oledb in c#:

I have to insert values from textboxes in a new row in a excel table.
here is the code:

private void scriviexcel(string filexcel)//fileexcel="c:\\prova.xls";
        {
            string scheda="table1";
            OleDbConnection conn = new OleDbConnection();
            OleDbCommand command = new OleDbCommand();
            conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filexcel + ";Extended Properties=Excel 8.0;");//HDR=YES;IMEX=1;ImportMixedTypes=Text;TypeGuessRows=0""";
            string datao = DateTime.Now.ToString();
            datao=datao.Substring(0, 10);
            //cut the time from DateTime so datao="02/11/2011";
            string pro = "INSERT INTO " + scheda + "(nome,indirizzo,telefono,difetto,data) VALUES('{" + textBox1.Text + "}','{" + textBox2.Text + "}','{" + textBox3.Text + "}','{" + textBox4.Text + "}','{"+datao+"}')";
            command = new OleDbCommand
            (
            pro,conn
            );
            command.Connection.Open();
            command.ExecuteNonQuery();
            command.Connection.Close();
            conn.Close();
        }

and this is the error:
"The Jet database engine could not find the object 'table1'. Make sure the object exists and the name and path name correctly."

I need to have microsoft office installed ?

can anyone help me?

Thanks