You will update the code in wordpress (and/or its template). Changes are really minor. You must have experience modifying Wordpress tho.
You are required to modify the following:
1) When a post page is opened, the html <title> tag must only show the post title and nothing else. No blog names should be in the title. It whould work this way only on the blog post pages.
2) When a certain referer comes to a post page, and if the referer URL matches the search string, then a post content has to be altered through preg_replace, before it is posted on the blog.
The code will look similar to this one:
$post_content = preg_replace($search_string, $replacement_string, post_content)
The post_content must not be altered in the DB. It just needs to be altered "on the fly" in case of an eregi() match, before it gets posted on the blog.
I will provide the contents of the search and replacement variables. I will only need to know where this code update snippet resides.