custom boxes which expand with text

I was hoping CSS borders would do what i needed, but apparently not.

How do I create a table with custom borders in dreamweaver? Using an image
for the border area doesn't work, because if the user's browser has a large
text size the text expands outside of the border area. I need the border to
be an integral part of the table which contains the text.

Am I going to have to learn how to use ImageReady to do this, or can it be
done through dreamweaver?