b2 comments

Hello, im slightly new to creating blogs. I used to use b2 for my site but then after looking at wordpress i decided to switch. Heres my problem. I want to make comments like they are setup in b2 where you click comment and it generates an edited version of your index and shows the comments under the post. An example of this is at http://www.cafelog.com (which is b2 site)! If someone could explain to me how to do this in wordpress that would help me out alot thanks!