AAHK2 or the Easy Ace Root Tool. Or just unlock your bootloader manually. Ace Think Tank thread in DHD General is a good resource.
I also have a hunch that no one responded to you because it's rather vague and easily answerable with a couple searches. Did you have a more specific question you wanted answered?
Last edited by bananagranola; 2nd June 2014 at 06:34 AM.