I can not find an installation tutorial on your site, but I did find one at phpBB located at: https://www.phpbb.com/kb/article/installing-and-setting-up-your-own-web-server
This instruction appears to be written incorrectly.
http://i276.photobucket.com/albums/kk12/tank130/xamppinstruction_zpsbb27b258.jpg
When I follow the instruction I get this.
http://i276.photobucket.com/albums/kk12/tank130/404error_zpsbb860534.jpg
What confuses me with the instruction is it says, "From here, browse your computer to C:\xampp\htdocs. Create a new directory named phpbb. Copy the phpBB files to this directory. Next, open your browser and enter the URL in your browser:"
I do not have a folder named phpBB in that directory or anywhere else. The only folder similar to that is just called php
As well, my directory is D:\eir2forums\htdocs but I don;t think that should make a difference should it?
Running windows 7
xampp-win32-1.8.2-0-VC9-installer
BTW - why the heck can I not post images here?
Edit - installing as localhost