Combobox, auto-refreshing while typing

[floydus]

Hi, well, the title of my post should say it all...
I need a combobox that auto-refresh content depending on what the user type.
Example if I type "a", it displays the list of choice starting by a.. like below.
typing "a"
alain
alternative
azoummm
.....,
typing "al"
alain
alternative
....

Would be really great if a component like that exist, or if you could submit actionscript or fla sample file.

Thanks a lot