Now that you have the Sam files you need to open Ophcrack. If you don't have the tables you can get them at ophcrack.sourceforge.net/tables.php
. You might be able to get the password cracked with out the tables but it is very unlikely. If you have a super fast computer or super slow internet the faster (not really but if you have a supercomputer with out INTERNET this might work) way might be using winrtgen (but this is super slow but does let you add special symbols).