When i start the chntpw tool from the menu i get a message in terminal with all the info about the tool, but if i type "chntpw -whatever" it gives me the message:
The program 'chntpw' is currently not installed. You can install it by typing:
apt-get install chntpw
bash: chntpw: command not found
Then i try to do "apt-get install chntpw" and it says:

Reading package lists... Done
Building dependency tree
Reading state information... Done
chntpw is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
And of course it still doesn't work as it didn't install anything.

I tried running "apt-get update" and then installing again but with the same result.

Help much appreciated (: