Do you use putty?
This is a quick method - using wget command. "wget http://wordpress.org/latest.tar.gz"
If not, then
1. Create a database for your wordpress install. (Note the database name, username and password)
2. Upload the wordpress files to your domain (that you have downloaded from
http://wordpress.org/latest.zip )
3.Rename wp-config.sample.php to wp-config.php and then edit the file - input the info that I have highlighted in red with your database name, username, and password
define('DB_NAME', '
putyourdbnamehere'); // The name of the database
define('DB_USER', '
usernamehere'); // Your MySQL username
define('DB_PASSWORD', '
yourpasswordhere'); // ...and password
4. Use your internet browser to navigate to your new wordpress install and follow the prompts, as wordpress populates your database.
The permissions will be set for you by default. Or install this plugin, "wp-security-scan" to check your permissions.
http://wordpress.org/extend/plugins/wp-security-scan/