Help for beginner

I am trying to install my first every PHP directory! i have tried my best to follow the "install" instructions that came with the site as per below, but i seem to have hit a brick wall, please please could anybody help me by taking a quick look at the site here: http://www.webfootarts.com and check the instructions below and hopefully point out to me were i have gone wrong.

1. Upload the files in the archive to your host.

2. Change permissions on the following file and four folders to 777
- include/config.php
- temp/
- temp/adodb
- temp/cache
- temp/templates

If the folders do not exist please create them.

3. Access the installer/updater by trying to go to the directory.
It should forward you to http://www.your-domain.com/install/ ,
if it doesn't try typing in the URL directly.

For example, if you installed the directory in a sub folder
of your domain it may look like this:
http://www.your-domain.com/directory/install/

4. Run through the self explained setup, if you have any questions,
comments or suggestions stop by the forum:
http://www.phplinkdirectory.com/forum

5. As a security measure, we recommend you change back permissions
to 755 on the file:
- include/config.php

You can also remove the entire "install" folder.
If you want to (re)install/update on a later point, you can upload
the folder again.

6. If you are running your directory under a subfolder of your domain (example: http://www.your-domain.com/directory/)
please edit the .htaccess file.
In this case you need to add the foldername in the "ErrorDocument 404" statement:

- ErrorDocument 404 directory/index.php?httpstatus=404