I've problem with DBGrid

I use D6, SQL Server 2000.

I have 2 tables with the structur :

CREATE TABLE T1 (
IDBRG INT PRIMARY KEY,
CODE VARCHAR(5),
Name VARCHAR(50)
);
// field Code is indexed unique

CREATE TABLE T2 (
NOTA VARCHAR(3),
IDBRG INT,
JML TINYINT,
PRIMARY KEY(NOTA,IDBRG)
);

Now, I make a form to enter data to table T2. On the form, I use DBGrid. I
want to make layout in dbgrid like it:

NOTA CODE Name JML
------- -------- ------ -------


So, user can only enter/type data on column NOTA,CODE,JML. Because column
NAMA will filled automatically when user enter CODE by right (there is on
table T1). Now, if I make field CODE as lookup field (FieldKind =fkLookUp),
So user can not type data, but has to choice item in list.

How to make an interface so user can enter data by typing? Any help to solve
it? I hope the solution "Dont use special component"

thx


.