htmlb:inputField and IE's AutoComplete

Do you know the AutoComplete function of the Internet Explorer? As soon as you enter some letters into an intput field on any web page, you get a litte dropdown box with all the entries you did in similar fields that match to the letters you already entered.

Strangely, if you use htmlb:inputField (Design2003,WebAs 640), there is no AutoComplete available.

Do you know why that is or what I could do to make it available?