This is in the "Upload the Files" part of the installation instructions. After connecting to the server it says, "Create Installation Directory". What does this mean?

http://www.ubbcentral.com/doc_install.php

It is saying to create a folder for your forum. This site is places in a folder called forums, which you can see by looking at the url of www.ubbcentral.com/forums/. My sites are forums only so they aren't in a sub folder.

The installation directory is kinda misleading since the program has a install folder.
It just means if you want the url to be say www.mysite.com/forum
Then create a folder called forum and copy all the unzipped folders and files under it.

i did a more pictorial install guide that might help on my blog

Linky Poo

feel free to read it or not