Positioning a value in the List Box (1 Viewer)

[prao]

I have a text box and below that I have a list box. I have populated the list box with data from contact table (last and first name)
When user type some letter in the text box, I need to highlight the Contact name starting with that letter in the list box. This is something similar to the address book in the MS Outlook. When you hit the To button in compose, it will open a address book. There is text box, when you type some letter, it automatically highlights the name starting with that letter in the list box.

Can somebody help me with this question.

Thanks

 

[KevinM]

Use a combobox instead, as they have this 'autofill' feature built in.