[PntSingularity]

I'd like to know what files are associated with the attachments feature in vBulletin since I'd like to write a much similar feature. Especially I'd like to know what .php files are used and what functions etc.

To explain further:
I want a button when you write/edit a post to open the little window for organizing the data (for the attachments feature this would be the uploaded files) associated with the post (the data will be stored in it's own database table).
I want this data to appear in the post somewhere. I'm not even sure where to enter this. I would've imagined that I should add the necessary code in the postbit template, but it doesn't seem like vB uses that template at all so I'm somewhat (read greatly) confused.

Obviously I'm not asking anyone to write my plugin for me, but am asking for any information on this that could guide me in the right direction.