I take no responsibility for anything that happens when you use this script.
It works for me, and I'm just passing along the script - use at your own risk.

This was borrowed/modified from the LiveJournal hack found here: 
http://weblogtoolscollection.com/archives/2004/05/21/livejournal-autoupdate-for-wordpress-12/

** INSTALL INSTRUCTIONS **

1) Download the following file: http://www.pubarso.com/misc/ljwp/lj.php.txt
2) Rename file to 'lj.php'.
3) Edit the file, replacing your LiveJournal username & password in the appropriate place.
4) Change anything in the 'content' section as you see fit.
5) Upload the file to your wp-admin directory.
6) Download this file:  http://www.pubarso.com/misc/ljwp/class-xmlrpc.php.txt
7) Rename to 'class-xmlrpc.php'.
8) Upload (and replace) the file to your wp-includes directory. (You may want to back up the old one first.)
9) Edit 'wp-admin/edit.php' as follows:

Find this:
   <th scope="col"><?php _e('Delete') ?></th>

After it, put this:
   <th scope="col"><?php _e('LiveJournal') ?></th>

Then, find this:
   <td><?php if (($user_level > $authordata->user_level) or ($user_login == $authordata->user_login)) { echo "<a href='post.php?acion=delete&amp;post=$id' class='delete' onclick=\"return confirm('" . sprintf(__("You are about to delete this post \'%s\'\\n  \'OK\' to delete, \'Cancel\' to stop."), the_title('','',0)) . "')\">" . __('Delete') . "</a>"; } ?></td>  

After it, put this:
   <td><?php echo "<a href='lj.php?ID=$id' class='delete'>" . __('LiveJournal') . "</a>"; ?></td>

Then, find this:
   <td colspan="8"><?php _e('No posts found.') ?></td>

Change the 8 to a 9, so it looks like this:
   <td colspan="9"><?php _e('No posts found.') ?></td>

10) You are done.


** USAGE INSTRUCTIONS **

When you want a post to show on your LiveJournal, just click the LiveJournal button, and it will happen.

If you want this to work for DeadJournal, open lj.php and anywhere you see 'livejournal.com' replace with 
'deadjournal.com' and it supposedly will work.  I haven't tried, but I read somewhere it has the same
xmlrpc interface that LiveJournal has.


Brandon Martus
http://www.pubarso.com/
mister@pubarso.com