how to add drop down list in screen

Hi, I have created custom database table and I have created sample data. Now I have to place the table field as a drop down in the screen and when I click on database field in the screen, available data has to be seen in the drop down.

beside drop down I have placed one text field and based on item selected from drop down, text has to be populated in the text field.

Can anyone please advice on this. Thanks in advance,....

Edited by: B K on Mar 23, 2009 10:37 AM