In your folder, that you've installed the wordpress blog, gather it is on the same folder as your website?
The site http://www.hammocksonline.co.nz here there, however, you won't the see the blog, because it'll display the http://www.hammocksonline.co.nz webpage,
Do you want to have the blog other write your website? You can remove the website.
If so: (here is my disclaimer: make sure you back up your website: I am not responisble if your files go missing ok?)
But safer option is to create a hyperlink linking to your blog. So install wordpress in a folder called blog, and create the blog online, once you are ready to launch the blog include a hyperlink to your bglog from your website.
I help this helps. I would suggest go with the latter option