Can not view my website without adding "www.domain.co.uk/wordpress

I am new to WordPress and have struggled with the set up from start to finish. I used Frontpage previously and had no problems but hosting providers are not supporting Frontpage any more. So time to leap into the 21st century I suppose!!!

My issue is that I having installed WordPress (as per WordPress for dummies book) I am unable to preview my site from my dashboard I get Error 403 Forbidden on this server.

I get the same message if I type in my website domain in my browser. Unless I type /wordpress on the end.

WordPress is loaded in wordpress directory in my HTDOCS folder, and my site is hosted using Fasthosts.co.uk.

Please does anyone have any ideas?