C# -- remove comma when reading TXT file ?

The below code reads in my below "John Doe" variance.txt correctly.

NAME,FILE#,SSN,CHECKVIEWPAYDATE,Total_Hrs,CHECKVIEWGROSSPAYA,HOMEDEPARTMENT
"John Doe",229999,9263,12/06/2010,56,278.72,104002
"Jane Doe",181,6331,12/06/2010,40,74,101301
"John Smith",1041,1207,12/06/2010,40,12,101001
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How can I change the code to remove the , or replacing it with
a space or something so it reads in the below "John, Doe"
as one column ?

NAME,FILE#,SSN,CHECKVIEWPAYDATE,Total_Hrs,CHECKVIEWGROSSPAYA,HOMEDEPARTMENT
"John, Doe",229999,9263,12/06/2010,56,278.72,104002
"Jane, Doe",181,6331,12/06/2010,40,74,101301
"John, Smith",1041,1207,12/06/2010,40,12,101001

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        private DataSet ReadFile(string filePath)
        {
            OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0; Data Source = " + System.IO.Path.GetDirectoryName(filePath) + "; Extended Properties = \"Text;HDR=YES;FMT=Delimited\"");
            conn.Open();
            OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * FROM " + System.IO.Path.GetFileName(filePath), conn);
            DataSet ds = new DataSet("Temp");
            adapter.Fill(ds);

            return ds;
        }
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        public bool ImportFileVariance()
        {
            string filePath = @"C:\import\variance.txt";

            DataSet ds = ReadFile(filePath);

            return dbAccess.ImportVarianceRecords(ds.Tables[0]);
        }
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