<p>If that's what you're set on doing, then just review what you need to know; check the collegeboard website if you're not sure.</p>
<p>I took it twice, and would probably do it again if it weren't for financial setbacks (those tests rack up quite a bill!). </p>
<p>My advice is not to decide for sure until you see how you do the first time around. Many of my friends opted not to take it again because they did sufficiently well in the first place.</p>
<p>Good luck!</p>