Read-only Text Box?

I am building a web form using the older (green) reporting collection with several Text Box elements.  I would like some of these text boxes to be read-only.  I could accomplish this using HTML such as:

but for many reasons (particularly consistency of formatting) it would be much better if I could use the Text Box component.  Is there an easy way to do this?  Perhaps something I could put in to the HTML Attributes parameter of this component?

Thanks,

John Feinberg