adding text to verification box

The verification works great... but since I added the verification people have been complaining they cant sign the guest book. The problem is that they see the verification letters but they don't know what they are for. I want to add some text under the box where you place the verification letters to say you must add the letters in the box to your left to complete the transaction. Or something like that.

Like I said people are so confused about it, I would have never thought that but its so. I have seen it once on someones Guestbook so I know it can be done I just dont know how. Any help would be nice, thank you.

very easy

look for the template template/catpcha.php
and add a new table row

Thanks the code you gave me worked but it added another box, since I don't write code I was uneasy with changing it but I deleted a few lines and got what I wanted thanks........ http://www.i-20riders.com/guestb/index.php......