problem: users can still change font and size of text in TEXT box

question: how can I lock up the ability of users to edit the font type size etc. inside a TEXT box (inserted from the CONTROLS section)?

background: I am making up a word 2007 document form and I am including some editable text boxes for staff to fill in. I have been using the menu and selections of: DEVELOPER-CONTROLS-TEXT. Everything has worked well so far but when I test it out I find that I am able to change to text size/font. i want this to be the same on all completed documents without staff tampering/altering this feature.

The only way I know to do this is to use the legacy form controls in a document protected for forms. Do not mix the types!

See Add Classic FormField Controls to Ribbon for a tool that makes it easier to use these controls.

how can i change the default text for plain text contole,like when i open document the controle default text should some thing like "Enter Your Name"