The example in the link needs javascript to work (not everyone has javascript enabled).
See http://www.wickham43.supanet.com/tut...verpopups.html item 1 for an example tutorial which does not use javascript so popups can be seen by viewers who have javascript turned off.
Other examples for free code can be seen here:-
http://www.dynamicdrive.com/style/cs...-image-viewer/ where you can substitute text for the large image popup.
I don't think you will find code in Dreamweaver to do it, you will have to create your own code and insert it.
Code downloaded to my PC will be deleted in due course.
WIN7; IE9, Firefox, Opera, Chrome and Safari for Windows; screen resolution usually 1366*768.
Also IE6 on W98 with 800*600 and IE8 on Vista 1440*900.