@NogDogAug 16.2005 — #Well, a DIV is simply a HTML markup element that can be used to designate any arbitrary division of the document by surrounding it with <div>...</div> tags, just like you surround a paragraph with <p>...</p> tags.
However, my guess is that what you're really asking is how to use CSS styling to create the visual design of a page instead of using tables, since often DIVs are used in such a technique to assign styling options to a specific section of a document. If that is the case, then I'd suggest you start by browsing/searching the CSS forum here.