"answered" my own question, so to speak...
the code(s) are not required. i simply ran the box into stb -all is well.
now, i have another issue, lol!
i just connected my dvd1 to the avant for the first time. everything is great. incredible video, audio, etc... however i have lost control of the dvd1 via beo4 (worked fine w/ my mx5000 and scart.) i connected a minijack lead from data on the dvd1 to ctrl on the avant, but no luck...
i have rebooted, etc... (2) points... i used an audio minijack as that was handy and also the dvd1 does not show up in the external sources menu, so i used "generic nstc."
any thoughts? as always -thx much!