Thanks! Got me up and printing on my friend's AEBS in about ten minutes. I was able to use the Print Administration tool in Hardy Heron. Scanned the AEBS at 10.0.1.1 using nmapfe and found port 9102 open. Using AppSocket/HP JetDirect, I entered host 10.0.1.1 and port 9102. Voila!
There was no need to do anything else on either Ubuntu or the Mac/AEBS.