Site parsing error

Hello all, I just finished creating a website through iWeb '09, and was able to FTP it straight through the program onto my free site domain at: www.000webhost.com. I'm getting this error though when I try to view the site: . I'm no web design guru so I have no clue about how to fix this. Now I emailed tech support, and this is what they said:

So what exactly does this entail, is it something I have to do through iWeb, or through a program like Cyberduck and edit the files individually? Any help would be appreciated.