Bluetooth setup with Sony-E. T637

I finally bit the bullet and got the Sony- Ericsson T637 with Cingular...I couldn't find the Motorola V600 since they [Cingular] don't sell it anymore. When I just looked in the Nav manual to set it up, there is a part that says to enter 'passkey 1212'. Do I have to do it? I'm afraid somehow I will have to start using pass numbers to use my phone and I have enough trouble remembering my own name let alone more passwords/numbers. Thank you..