RTRIM Syntax error

RTRIM Syntax error

I m using sql server 2005. I want to use RTRIM function for column Name
having datatype Varchar(20) in sql server 2005 but it is giving an
error(incorrect syntax near'(').
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con
=DriverManager.getConnection("jdbc:odbc:project","sa","123456");
PreparedStatement stmt= con.prepareStatement("insert into
driver
(RTRIM(Name),Address,Email,Homeph,Cellph,Startdate,Hourlyrate,Image)
values(?,?,?,?,?,?,?,?)");
stmt.setString(1,tx_name.getText());
stmt.setString(2,tx_address.getText());
stmt.setString(3,tx_email.getText());
stmt.setInt(4,Integer.parseInt(tx_homeph.getText()));
stmt.setInt(5,Integer.parseInt(tx_cellph.getText()));
String
date=cb_date.getSelectedItem().toString()+"-"+cb_month.getSelectedItem().toString()+"-"+cb_year.getSelectedItem().toString();
stmt.setString(6,date);
stmt.setInt(7,Integer.parseInt(tx_hourlyrate.getText()));
stmt.setString(8,tx_image.getText());
stmt.executeUpdate();
JOptionPane.showMessageDialog(f,"Data
Saved","Save",JOptionPane.INFORMATION_MESSAGE);
}
catch(Exception en)
{
JOptionPane.showConfirmDialog(f,en);
}