[Verizon Droid Incredible 2] Letitride:
Things might've changed a bit at Big Red with the unlocking code, but not by much. First, I would strongly recommend using a near stock global Rom (Andy Bone's - the difference being that it'll stayed unrooted and 99.5% stock basically - Superuser installed.

You need to be a Big Red customer in good standing (bills are paid/current & on account for 3 or 6 months continuously) - and have a non VZW-Vodafone Sim (known working prepaid Sim from AT&T Gophone, T-Mobile, or foreign Sim for test & verification afterward) - phone should be S-off and unlocked, CWM installed if possible (so that you can make a full backup copy of your Stock Rom with APN/PRL (save it to a HDD, USB or Cloud storage)

Call up VZW from another phone line (mobile, home/office, VOIP or whatever - that they can call you back from if necessary - ie. disconnected while on hold) - from among the automated Menu option & voice prompt, select Tech Support for smartphone and/or Global Support - if you get routed somewhere else, ask them to forward to Global Support.

Give them your account info & verify, passcode and/or Soc. Sec. etc. - tell them you need to unlock the DI2 for travel and to be able to use another prepaid Sim card. S/he will read their scripts and inform you that you are responsible for charges, damages and will have no access to support - acknowledge & agree, they will ask confirm your email address & send you the written disclaimers, etc. You might be put on hold for a few minutes, do NOT hang up - make sure they have your immediate call back # - as they will need to go into their database & look up your IMEI's unlock code. Once they have it, they will come back on and walk you steps-by-steps, to go to the Start Menu and submenu, and get to the unlock screen - input the code (I believe it was 8+ digits) - and as soon as the last correct digit is entered, the screen will refresh & say unlocked. Next, exit & close those submenu, turn off & reboot the phone - whatever instructions, just follow it.

With your own "foreign/non-VZW" Sim already installed, you should be able to switch to GSM mode under Wireless & networks / Mobile neworks - and see the new "Carrier's Name" displayed and likely an (E)dge symbol instead of 3G, that is your confirmation of a successful unlock. It is permanent, regardless of switch & flashing to other Rom, etc.

That's it. Copy & flash your choice of Global Roms, unless you are planning to use the DI2 overseas or elsewhere and not using CDMA again ever, I recommend staying with one of the proven ones here - ICS/JB or 4.x ones are cool to play, but battery life is average at best - trust me on this one from personal experience while traveling. Customize & configure the Rom to your own liking - plenty of Google Play (Store) update once it is up & running as many of the preloaded Apps have been revised/updated many times since - best/fastest over a good WiFi connection - then, make both a TB backup of the Apps and a full CWM Recovery backup image - save them both to HDD/USB and Cloud Storage - mission accomplished.

For use within USA, you will have 100% working voice calling & SMS/texting with AT&T and/or T-Mo's GSM network, and 2.5G data only if your plan has data bundled as add-on, and the APN settings are auto-updated/loaded. That's about it - for as little as $30/mo - you can use this device for unlimited calling and texting, and works great when you are on broadband over WiFi. Load an offline Map like Nav free USA with maps (16GB or 32GB mSD is recommended for storage) and you can maintain turn-by-turn navigation on the go.

Any other questions, please feel free to ask and/or leave me a PM - and will try to address them as best as I can on practical usage. For technical help on specific Roms, the developers are your best friends. Good luck, enjoy & have fun.