I don't know what the ADBA cards look like I am assuming they are similar to the UKC ones.
They should have the parents names and their registration numbers on the front of the card. on the back should be a place where the breeder has signed his name, then a spot for YOUR information under that and a place to put the dogs registered name. Fill it out, send in the registration money ( i think $30 for 4 gen pedigree or $50 for a seven gen ped)
Once your paperwork comes back in from the ADBA. Go to http://www.abkc.com
and download and print off the registration form. You will need to send in at LEAST a 3 generation pedigree (that you will get from the ADBA) will your paperwork and I think its $20 bucks.
Hope that helps ( BTW the ABKC site was down for construction the last I checked)