This is going to sound terribly condescending, and I really do not intend for it to be so, but am really trying to save you future headaches. If you can't figure out the rooting steps by all the info provided, particularly here,
Howto: Root the HTC Droid Incredible - Technology - Jonamerica.com , then I would really recommend you not do it. Sometimes you have to have level of "tech sense" that helps get you through things, whether you have done something similar or not in the past. It helps identify the little things, like knowing an Application file is the .exe that needs to be run. (Probably bad example, but one from a post above).
My point being this...root is intended to apply mods, roms, themes...blah, blah, blah. Some of these items are no more difficult than what you are trying to do, but you can (emphasis on can, not will) brick your phone if steps aren't understood/followed directly. Which leads to more headaches trying to recover from, if it's even possible.
You have to ask yourself the question, is root and what you want to do worth it? Are you going to improve the phone over what you currently have to the point it is worth the (potential) headaches? If so, then keep on, keepin on, the community is here to help you...they have certainly helped me, either directly or indirectly, as I just rooted (Unrevoked 3.2 Beta) for the first time, installed Virtuous ROM, custom kernel, and INCredible REVOlution theme in the last two days. All of which works wonderfully, and was much less intimidating to accomplish than originally appeared.
Again, my apologies, no harm intended by my post.