C#

private void deleteIt()
{
 System.Data.OleDb.OleDbConnection oleCon = new System.Data.OleDb.OleDbConnection();
			oleCon.ConnectionString("connectionstring");
			oleCon.Open();
			System.Data.OleDb.OleDbCommand oleCom = new System.Data.OleDb.OleDbCommand("delete from table", oleCon);
			oleCom.ExecuteNonQuery();
			oleCon.Close();
}

private void add()
{
System.Data.OleDb.OleDbConnection oleCon = new System.Data.OleDb.OleDbConnection();
			oleCon.ConnectionString("connectionstring");
			oleCon.Open();
			System.Data.OleDb.OleDbCommand oleCom = new System.Data.OleDb.OleDbCommand("insert into table (value1, value2) Values("values1", "values2"), oleCon);
			oleCom.ExecuteNonQuery();
			oleCon.Close();

}

• Run vstor.exe
• When the installer form appears, open Explorer to "%TEMP%\IXP000.TMP"
• Copy all of those files to a "happy" place
• Cancel the installation
• Roll your own installation using those copied files and the command "install.exe /q"