As a warning to everyone doing this, Verizon can tell that you are using this feature and could possibly charge you for it. So far, I haven't seen a single case of them actually calling anyone out on it. I have used it myself, and not heard anything from V, but just know it could happen.
In order to avoid the possibility, root and get Wireless Tether. Don't get it from the Market, get it from the dev website, the one on the market doesn't work 100% on the Incredible with Stock ROM and kernels, but the latest version from dev site does.
I still keep the DUN hack ready on my Incredible, just in case I need it, but I rely on Wireless Tether. It's nice to not worry I'm going to get a huge bill...