Custom task form - disabling box selection/deselection

[AndyKnights]

Hi,

I have created a custom task form in Outlook, and the problem that I have is
that when the cursor is in a text box, when the cursor is at the top, I don't
want the "up" cursor key to take the cursor OUTSIDE the box into another
box/field.

(However I want them to work INSIDE the text box to scroll through any text,
etc.)

If anyone could help, I'd be eternally grateful!!!!

Thanks.
Andy