It turns out that the Pearl can import vCards in email. Many T-mobile reps don't know this. It also turns out that vCards sent from Entourage don't work.
The solution that I used: send the vCard from gmail.
Once the email arrives on the phone, you can use the menu to add the address to your address book. It looks like you can send multiple vCards also.
Anybody want to test this further?
p.s. I used my blackberry.net account on the phone.