I use div tags to define areas within my web pages. I set all the obvious things like background, size, padding, etc. But it is all very square.
How can I use
There's a tutorial in http://www.sitepoint.com/blogs/2005/08/19/dom-foolery-with-images/ that explains how to set rounded borders in images. Peharps it migth be useful to you since the image is set as the background of a div. Although you will need to use other images and a javascript. The javascript code may be reduced if you use JQuery. o/