Link: Flex AutoComplete component

If you're ever looking for an autocompletion component in the Flex framework, I'd strongly suggest you check this one out: http://hillelcoren.com/flex-autocomplete/ Quite simply it's awesome, it's fully featured and packs a helluva lot of options into such a small package.

I swapped an old ComoBox component for it just now, and it worked fantastically with no additional configuration.

Check out the demo for it here: http://web.me.com/hillelcoren/Site/Demo.html