Wordpress plugin or Fix that shows all my post in summary?

Hey guys,

I would like a plugin or a code fix to put all my wordpress posts in summaries instead of full post for the index page, the search page, the archive page, the tag page, etc.

Just like this wordpress blog

http://www.commentdraguerunefille.com/

I know he is using a theme that allows that byt default but the problem is I am using a theme that I already love and I don't want to start using another one. Im just looking for a plugin or a fix.

Thanks

No need for a plugin there.
Just modify "the_content()" by "the_excerpt" in the following files (in your theme folder) :
- index.php or home.php
- archive.php and archives.php
- search.php

That'll make it