One more thing:
If the person who posted an article is not the same as the person who wrote it you can use the following SQL command to change it:
UPDATE w3t_Posts
SET B_PosterId = xxxx
WHERE B_Number = yyyy
xxxx = the user number of the person you want listed as the author of the article.
yyyy = the post number that you want to change.
As always, backup your database before making changes!