I've got a little follow-up on this. I did some experimenting with the non-learning universal remotes floating around the house. Both my Model 990 remote and the remote that came with my Scientific Atlanta Explorer 8300HD cable box worked with DVD code 0503 (a Toshiba code, I think). An older cable box remote (the one that came with the Explorer 2200 that we have in the bedroom, which we've had for probably six years at least) worked with codes 081, 082, and 088 with one quirk: the channel +/- commands worked for chapter skip but were reversed (channel+ skipped back while channel- skipped forward). There will still be some remote functions that you'd need the original remote for (changing resolution with the "HDMI" button, for instance), but you could handle all of the normal playback functions just fine.