DB_DataObject_FormBuilder questions

Hi, I have a couple of questions about using DB_DataObject_FormBuilder: - How can I freeze one particular field? When editing existing Users (as opposed to adding new ones) the username field of my form needs to be uneditable. - I have been using $formBuilder->fieldLabels = ... to set friendly labels for my form. That's great, but some fields have to be recreated in the DB_DO class-located function preGenerateForm(), to change the field type. And values in the fieldLabels array for these fields are overridden. Is there any way to prevent this happening, as the DB_DO classes are very much common/core parts of this application, hopefully installed in one central location for a group of clients. Therefore anything needing to be customised should be located outside them - plus this makes multilingual use much easier. (As an aside, I'm guessing to keep this 'pure' I should subclass the DB_DO-generated class and put these FormBuilder methods in there, then modify the class on a per-installation basis. But I'd still like the labels set all from one place :-)) Thanks, Peter -- Maple Design - quality web design and programming http://www.mapledesign.co.uk