Is there actually a page as in HTML or are the files just sitting on the server? If their just sitting on the server then to do that I think the web server would have to have ftp enabled and allow anon access. Servers are generally designed not to allow this because of the security implications. If this is your own web server then set FTP up if its commercial you will have to get the hoast to set it up on a folder for you or just do an html page.
If there is actually a page then you just need to put the proper page name in. There can only be one index page per site all the others have proper names such as httpblabla//:mysite.co/mypics.htm