Given that you didn't specify and you have a low post count I assumed that you would be using the newest version. If so then the autocomplete-related properties are in the Misc section of the Properties window. If you're not using 2005 then autocomplete is not supported by the standard controls. You'll either have to find a third-party control, of which there would be several free versions available, or else implement it yourself. The Code Project is the first place I'd look for a free third-party implementation. Also, please specify your version in future so we know what you have access to and what you don't.