WinNT and previously used passwords

[KF <dotslash () snosoft com>]

Today I got a message when I logged in to my domain about my pass being 
expired... so as expected I went ahead and typed in a new password. Next 
thing I know NT (win2k really) is barking at me saying I can not use any 
of my previous 10 passwords. Aparantly the one I wanted to use today was 
one I used a while ago.  I found it interesting that SOMEWHERE my last 
10 passwords are achived in the SAM or registry maybe? So my question is 
are there any tools similar to l0pht crack in which the last 10 
passwords can be extracted from either the registry or the SAM file or 
where ever they are hiding? If I remember correctly l0pht crack grabs 
the CURRENT password and trys to crack the hash . I am not aware of it 
going after the old passwords so forgive me if l0pht crack already does 
this. I think being able to determine a persons last 10 passwords would 
help in guessing what they may pick next... people tend to form patterns.

-KF