Integrate a Drupal website

[Vicbus]

Hello,

I just have finished my Drupal website, and I would like to integrate this site in my vBulletin forum.

A good example is this website : when we click on "Forums", we arrive on the forum, but the design, headers, ..., are the same than the website (ex : Articles).

How can I do for having my website (the menus, headers, background, etc) around my forum ?

Is there a plugin for integrate a Drupal website in a vBulletin forum?

vbDrupal is a a good utilitie but doesn't work if the website is already existing...

Thanks for answering !