ARGH!
I just tried to install this and it gave me the same error Anime-loo was experiencing above. I made sure to correct the mistakes he made, and reinstalled the whole thing again, but it still wont work!! 2 hours later and not a damn sign of improvement

It keeps telling me, when trying to run
http://localhost/forums/admin/install.php, that PHP is not installed. I am running Windows XP Professional and have done everything correctly..to my understanding. Any help?