Oh hold on I can understand this tutorial ok let me put it in plain and simple words for you
Firstly you need a FTP Client that connects to your server on in this cases sourceforge and allows you to upload files. I would recommend FileZilla which can be found at
http://filezilla-project.org/ .
Now get the phpbb3 compressed file and extract it to your desktop or where ever you want in on your computer.
Install the File Zilla Client and then open it. At the top you should see a bar with Host, User Name, Password, Port and a Quick Connect Button.
Fill in these paramaters, the Host is simply your source forge web address e.g nge.sourceforge.net and the user and pass I am not completely sure, you may either have to make these within your sourceforge account or there will be a default admin one which will be your login user and password.
After you have filled in the Host User and Password set the Port to 21. And press Quick Connect. In the top white bar you should see some text wizzing past, this is you connecting. If you get an error look in this section to see what went wrong. If this does not work try doing the same thing but leaving the port empty. If it still does not work make sure you have an ftp account set up.
Now you are connected to your source forge account. on the left is your files in the top left box you can click directories and in the bottom left box you can see the files in that directory. This is the same for the right except the right side are the files and directories on the server.
goto public_html directory on the server. So click the folder called public_html in the bottom right box.
Make sure the phpbb3 folder is called phpbb3 as this will be the directory root of your forum so to log onto it people will go phpBB3 look at the irrlicht one for example..
Drag that entire folder into the public_html folder. The files will start to upload and the directory structure will upload and all the files. (if that does not work make a folder called phpbb3 and upload all the files within the same phpbb3 folder on your desktop to this folder and be careful to keepthe directory structure).
Now you have to change the permissions on the following files and folders so that other people can access the forums.
These files and directories are
config.php (666 or -rw-rw-rw- within your FTP Client)
(777 or -rwxrwxrwx within your FTP Client):
store/, cache/, files/ and images/avatars/upload/.
To do this simply right click on each file and or folder and select File attributes then modify accordingly. Changing the numbers and check the boxes that are appropriate...
The acronyms R stands for Read, W stands for Write and X stands for execute so when it says rw - rw- rwx for example it wants you to change the top and have the read and write boxes ticked, and it wants you to have the read and write boxes ticked on the seconded line and it wants you to have the read write and execute files ticked on the third row. Seems easy enough.
Don't forget to change the number as well. Infact I think the number changes all the permissions as some kind of universal code but still do both to be sure!
Now simply got
http://NUSoftware.sourceforge.net/phpBB3/install and follow the instructions there.
7. Change the permissions on config.php to be writable only by yourself (644 or -rw-r--r-- within your FTP Client)
This means to go back to your ftp client FileZilla and goto public_html/phpBB3 and right click on config.php and change it to 644 and the top row to read write and the second row to read and the thrid row to read.
8. phpBB3 should now be available, please MAKE SURE you read at least Section 6 below for important, security related post-installation instructions.
You should probably read that
Ok and that should do it
Can I be a forum admin
Lol
Anyway I hope this helped