I'm a big fan of SitePoint. In fact, other than the old HTML Goodies site, I've learned most of my CSS from SitePoint. This afternoon while I was cleaning out my email inbox, I came across a nice article about Creating Beveled Images with CSS. It starts out showing you what the end result will be, gives you 4 techniques to follow with examples so you know what it looks like, and, it ends with where you can go to take beveling one step further.