Limiting physical length of text in a text box control

I am creating a restrictive form in XL2K. Anybody know how I can limit the
length of text typed into a text box control to the physical size of the text
box I created. I can only seem to limit the number of characters.

Many thanks

Thought i'd bump this up just incase there might be some fresh eyes that can
give it a shot. Thx Again

"XL2Know" wrote:

> I am creating a restrictive form in XL2K. Anybody know how I can limit the
> length of text typed into a text box control to the physical size of the text
> box I created. I can only seem to limit the number of characters.
>
> Many thanks
>