This doesn't require editing files, connecting your phone to your computer or looking up strange numbers, and can be done by nearly anyone.
Step 1: What you need
-An E-Mail account
-A Verizon phone
-$7 (To activate, only if not porting a number)
Step 2: Setting up with PagePlus
New accounts with new numbers:
Start by going to this link . Now, it's going to ask you for your e-mail address, your ESN (Electronic Serial Number) and your ZIP code. Go ahead and enter your e-mail and ZIP. Now go to your phone, take off the battery cover, remove the battery, and look at the label. Look for a number labeled "ESN (DEC)" Now enter that into the page, and submit. You then go through the normal process of checkout. Pay the $7 and wait for an e-mail.
New accounts with numbers to be ported:
This method uses Page Plus's website: Start by going to this link. Click the "Switch to Page Plus and port your number now" link and follow the instructions it gives you. When it asks for your ESN (Electronic Serial Number), look for the number labeled "ESN (DEC)" under your phones battery and enter that. You shouldn't have to pay anything when using this method, when going through Kitty Wireless you'd be spending about $25. DO NOT Follow the programming instructions on the page linked from here, as it's only a patch through to a specific menu and doesn't always work. Use the instructions in the next step.
Step 3: Programming the phone
Now go to the dialer where you'd normally make a call. Enter this number *228 (Asterisk - Two - Two - Eight) and press call.
You'll hear a voice say "Welcome to Verizon Wireless Programming", select 1 for english or 2 for spanish.
You'll then hear "on hold" music and a message will appear on your phone. Just wait until it tells you the phone is programmed.
Now restart the phone, and you'll now have PagePlus on your phone! You MUST make an outgoing call now, in order to activate the phone. Don't worry about having money, you get $2.00 free (If using Kitty Wireless method without porting).
You can now use the Kitty Wireless website to add money to your account and manage your phone.
I hope you enjoyed this instructable, and if you need any help, feel free to ask in the comments.