Step 1: After downloading all the files given first your gonna need the OphCrack Live CD XP ISO. After you download that your Gonna need a 1GB or higher Flash Drive Stick to install it on.
Step 2: Plug in your flash drive and locate it in the Computer or My Computer section in the start menu on your PC. Right click on it and select format and format it to FAT32. IT MUST BE FAT32!
Step 3: Now open the Universal-USB-Installer-22.214.171.124 that you have downloaded from the source. Follow the instructions. For the first block select OphCrack XP, Now brows for the ISO that you've downloaded and select it, Then after that select the Letter of the drive that you wish to install it on (In my case it was D) then click ok.
Step 4: Let the program do its thing and once its done open up the flash drive in Computer or My Computer. Go into the tables folder and now take the tables_vista_free.zip and extract the contents and you will see the vista_free folder, copy that to the tables folder on your newly created flash drive.
Step 5: Once that is done, Reboot your computer and have that flash drive as the only flash drive plugged into your PC and once you boot access your Boot Menu it will either be F2, F8, F12 or ESC depending on your PC and then Boot from USB and see if it works select Automatic if it does and just let it run.
XP Live CD: http://downloads.sourceforge.net/ophcrack/ophcrack-xp-livecd-2.3.1.iso