Just hope your brute-forcer is very fast.
It takes CAIN about 1 min to go through the 3kb wordlist that comes with it... (on my computer, anyway)
Woah what are the specs on ur computer? On my PC, JTR can do I think (I haven't used it since a reformat bear in mind) But I believe mine did about 1/2 million words a second, so a 3 kb text file would be knocked out in well under a second. Holy shit