I don't know how in depth I can get, it's basically a hack that I put together based on the idea of a weblog such as PHPNuke/PHPWebsite but using the vBulletin hack BFC Weblog that I believe was made originally by Paul Young and enhanced by wluke. Anyway I just put together various bits of these and some of my own ideas into creating "vBshell". The admin section allows you to enter html code into the side boxs with your browser, and you can add or delete the blocks in the same way. Such as the affiliate ads I put up on the vBShell demo, all I did was cut and paste into the block admin. It utilizes separate header scripts that will allow you to integrate the look and feel of your site into about any php script, and the nice part is that this allows you to call vB's user routines so you only have one user account site wide.
If you look at the admin and block scripts they will serve as a basic template as to how you can integrate any script into the site. VB utilizes the vBShell header thru the phpinclude template and in return provides the various templates for the Weblog/home page. I tried to keep it very basic for as easy as possible install, but with your imagination and a little work you can really customize it very easily.
It's rough around the edges right now, I'm not really a programmer and consider this a learning expierience. I hope that's enough in-depth rambling...