deny hosts removing an Ip and checking tcpwrappers

[Tapas Mishra]

Hi,
I could not find any where the documentation the only best which I got was
https://help.ubuntu.com/community/InstallingSecurityTools

My question is the following blog says to remove an IP from
/etc/hosts.deny which denyhost has blocked

http://www.cyberciti.biz/faq/linux-unix-delete-remove-ip-address-that-denyhosts-blocked/
you need to have a directory /usr/share/denyhosts/data
I do not find any such directory

Also when I tried to check  tcp wrapper configuration
as given here

http://www.cyberciti.biz/faq/block-ssh-attacks-with-denyhosts/

tcpdchk -v
Cannot find your inetd.conf or tlid.conf file.
Please specify its location.

what does the above output mean?
How do I make sure denyhosts is doing its job?