HTC Droid Incredible 2 - Android Forums - <Become a member here, I used them alot for my Evo, if they support the Incredible2 the same you will have no problems.

Read into the "All Things Root" section and learn first.

How to Root HTC Droid Incredible 2
Basic ^ How-to w/video. If you do this and it's wrong, don't come crying to me. I did weeks of research and watched a multitude of videos so that I knew exactly what I was doing and where you could go wrong should something happen. I was a pro and the phone was still stock lol.

Like with our cars, better to know what to do than facepalm and ask yourself why later.