Trying and failing to install wordpress as a CMS

I am trying to install wordpress as a CMS for a website http://www.everythingcovered.co.uk.
I have followed the instructions, created the wp-config.php with the correct database details and uploaded all the files to the my site using filezilla.
On the homepage of the site there is lots of gobbledegook:
http://www.everythingcovered.co.uk/

On the http://www.everythingcovered.co.uk/httpdocs folder (where the wordpress files are uploaded to) there is a 404 error:
Not Found
The requested document was not found on this server.

I’m using Plesk web hosting.

Any ideas?!