Your post came in from 2 different sources. So which is the real Bud? :-)

Anyway... If I understand you correctly, you will have to repopulate the
"dropdown" everytime the user  types something in. How many names  are we
talking about? What's the data  source? If you're picking them up with an SQL
statement it may be easier to filter. OTOH, If the data list  is sorted and
there aren't too many names then it may not be nessesary to do anything
because typing the first letter should jump the list to the first name.