You don't need a dictionary for a brute force attack. I would suggest using crunch to pipe the combinations to pyrit or aircrack IF an attack like this was feasible. 36 possible chars at 8 chars long results in 2 821 109 907 456 possible combinations. I would suggest having a friend set the WPA PSK password to something out of the dictionary. Then you can try every word out of the dictionary to find the password.