I saw someone had sent an email to
to request a code and got one, so I did the same. Just sent them the following:
Phone - Cingular Blackberry Pearl 8100
Cingular Account #
Then I added a little paragraph explaining I had been a Cingular customer for a while and was traveling out of the country for business and needed a code. I sent that on April 17th. I got a response email on the 23rd saying thanks for the inquiry and that they will request the unlock code for me from Blackberry and will give it to me as soon as it's available. (Confused, because I thought they came from the provider, not the manufacturer.)
Then today I got an email with my unlock code and my IMEI to verify it was correct when I sent it. Also included step by step instructions on how to unlock. The code worked perfectly the first time and now I'm good to go.
Just thought I'd pass it on for others. The emails go to a NCCS-Subsidy Unlock Group. I have no idea what that is, but they worked for me!