You realize you can separate the announcements so they aren't all grouped together, right? vboptions > Forum Display Options (forumdisplay) > Group Announcements That won't make it look exactly how you show in the image, but you may be able to play with the threadbit_announcement template.
Read this article about making your own page -
[How-To] vBulletin API Basics: Creating Custom Pages & Misc. Also in the article forum are articles on how to add links to your navbar.