I'm in this situation... How do you activate it to your own number then?
Here are some very helpful instructions from a poster on the Verizon forums:
"NOTE THAT IF YOU DO IT THIS WAY, THE IPHONE WILL NEVER BE ACTIVATED ON THE LINE YOU ORDERED IT ON, ONLY THE LINE YOU ULTIMATELY WANTED TO USE IT ON. THIS WORKED FOR ME FOLKS.
If you bought your phone on a different line than you want to use it on:
Turn off the phone that is on the line you eventually want the iPhone to be activated on.
Go to MyVerizon Home and choose Activate a Device.
Choose the line YOU BOUGHT THE PHONE ON.
When you get to the activation page, you will see the iPhone ready to activate. Click the box to accept the agreement, but choose "Activate Later," NOT "Activate Now."
Go back to MyVerizon Home and choose Activate a Device again. This time, choose the line you want the iPhone on.
When you get to the place where you enter the ESN/MEID, enter the iPhone ESN from your paperwork that came with the phone and click submit.
If everything is OK, you should now be able to plug your device into iTunes and activate it there.
However, my phone was still turned on, so this did not work for me. (And having the phone on may not have been the problem, not sure).
When I clicked "Submit" after entering my ESN, I got a message saying the phone could not be activated and it gave a 800 number to call.
Call the 800 number and ask them to switch the iPhone to the desired line.
Plug into iTunes, accept the agreements and your iPhone will be activated.
I made a call to my wife immediately and everything seems fine. I am now restoring a backup from my iPod touch so that I have all my apps and data from that device.
Hope this helps!"