> <http://cungviet.org/inaccessable>.  The thing is that 
> they have redirection page in that folder so I can not 
> download it.  Please help.  

In a way they have "protected" this folder then, by using the redirect. 
Unless you know of any specific page in that folder, eg: 
/inaccessable/page.html  then I don't believe you will be able to capture
anything.