>>What do I need to do to make a combobox only allow a user to pick from it's choices and not be allowed to type anything in?
>
>Style need to be Dropdown list.

Thanks Michel, that works great. However, when the field is initially blank (the user chose add) the dropdown list consists of the valid choices plus a blank. Besides assigning a default value on add, which the user doesn't want, how do I prevent the blank from being in the list?