DataSource Controls :: Getting Error For Last Two Lines

I am getting error messages for the last two lines of the following button click event handler code where I am attempting to create a new record in my Profiles table with 3 column entries:

protected void ButtonSubmit_Click(object sender, EventArgs e)
{
string Callsign = Server.HtmlEncode(Textbox1.Text);
string Password = Server.HtmlEncode(Textbox2.Text);
string Email = Server.HtmlEncode(TextBox3.Text);
DataClassesDataContext db = new DataClassesDataContext();
Profile profile = new Profile();
profile.Callsign = Callsign;
profile.Password = Password;
profile.Email = Email;
db.Profiles.Add(profile);
db.SubmitChanges(profile);
}

The first error message refers to the "Add" statement in the second to last line. It states, 'Syatem.Data.Linq.Table<Profile>' does not contain a definition for 'Add'. The last 2 errors refer to the last line. They state "The best overloaded method match
for 'Syatem.Data.Linq.DataContext.SubmitChanges(Syatem.Data.Linq.ConflictMode)' has some invalid arguments" and "Argument '1': cannot convert from 'profile' to 'Syatem.Data.Linq. ConflictMode'".