A couple other reommendations here.
1) Forum checking. Currently all people using it will get notifications from any new post in
any forum, including those that they do not have access to.
Should be something simple along the lines of
PHP Code:
fetch_permissions($row["forumid"]) & $vbulletin->bf_ugp_forumpermissions['canview']
2) Have a link to go directly to the new post in the pop-up, and also having the option to right click the tasktray icon as well...
3) Don't display latest messages made by yourself. After you make your own post it will tell you that there's a new message by you several seconds later.
5) Add support for private-messages
6) Add support for new registrations.
I'd be willing to co-author this mod with you if you would like, I see a lot of potential in this. I'd be able to work more on the back-end of the PHP, SQL, and vBulletin integration than the Java portion. PM me if you'd be interested.