As Neil says you have a path fault which is preventing your page form loading.
My suggestion is to start from scratch.
Delete all the files in all directories because you may now have confused the issue with copying files, and as you have done little modification it's as simple to start again.
Access your database and then empty it.
Copy the core files to your root directory and then type in www.yourdomain.com
As before the setup will start. Go through it and see if in theend you can access the admin pahges etc.
If you can then you have proved your server is setup and all files have the relavent permissions etc.
Why do you want to put the files in a sub directory? If it's an add on to an exisitng site then just rename the ps3 index.php to enter.php and alter the PS3 menu system to point to enter.php instead of index.php - a two minute job.
If you do want to use a subdirectory then delete everything again and ftp the core files into your chosen subdirectory.
The run the setup. If it all works great if it doesn't then find one path that works and use that as a basis to change the path structure in the globals.
Sorry if thats confusing ;-)