What you will need:
All the information from you vCluster Details page and Database Settings page. This includes: access server, public IP, database server, username, database name (the same as your username), and your database password. For quick reference during the myBB install, you may find it useful to copy these details into a text file.
The newest version of myBB, available to download from http://www.mybboard.net/downloads
A file extractor that is compatible with the .zip format. OSX and Windows handle this format natively.
An FTP program. You can use a program like FileZilla, or if you use Firefox web browser, there is an FTP add on available called Fire FTP. If your not sure which client to use have a look at this article.
A text editor. Notepad or Text Edit will both be fine.
A web browser. We like Firefox.
The official myBB install guide can be found at http://wiki.mybboard.net/index.php/Installing
Extracting myBB
Unzip your downloaded myBB install to a folder on your desktop.
Uploading
To upload myBB files to the root directory of your vCluster follow the FTP upload guide.
To upload myBB files to a sub-domain on your vCluster follow the vHosting guide.
Installing myBB
Now we’re going to install myBB using your web browser. Fire it up and navigate to the directory name we just created: mybb.username.group.vc.catn.com/
The first page you will get to is the welcome page, with the option to send anonymous stats. Either check or uncheck this box, and click next. Then there is a page with the license agreement, read through this then click accept. The following page checks the requirements, click next.
Then there is the database settings page, where you need to enter the database information you can find on you CatN settings page. Click next after you have filled it all in.

It will show you all of the tables that are made, click next. It will then confirm that the tables have been populated, click next again and it will confirm that themes have been installed. On the page after theme installation it asks for the site settings. The forum name, website name, and contact email are all configured here. Click next when you have entered everything.

After that you have to enter the information for the administrator user. Do this then click next.

You should now see that the setup has finished, and there are links to go to either the forum or control panel.
