I tried several 3 digit codes from the URC codes and it was 434. This gave me the codes for everything including a lot that is not on the Samsung remote like individual source selection and screen format. I now can do a macro and when you press DVD it will now turn on the TV, change to DVD source, turn on the pre/pro and set it to DVD, turn on the dvd player and open the tray. Press play and that's it.
I now would like to find a way to control more on my HTPC with IR codes. I'd like to open PDVD with an IR code, open the LG drive and be able to press play. I am running Media Center XP but I don't see a way to assign any programs individually to the remote.