i think that this may work, but i don't like it very much....

procedure TForm1.FormCreate(Sender: TObject);
begin
kgrid1.Options :=kgrid1.Options + [goediting]-[goentermoves]+[gotabs];
kgrid1.Cols[3].TabStop :=false;
kgrid1.Cols [4].TabStop :=false;
kgrid1.Cols[5].TabStop :=false;
kgrid1.Cols [6].TabStop :=false;
kgrid1.Cols[7].TabStop :=false;
end;