I have the Exccel file that Montini posted which has the Samsung TV Discrete Key layout and the Hex to IR code and the IR code to Hex workbooks, but my problem is I am not quite sure what to do with them. Say for instance I am looking for the discrete codes for the DVI input...it shows on that Excel file as being 8A. What can I do with 8A to get that either straight onto my MX-500 or to the URC-8811 so I can teach it to my MX-500. I think I found some of the codes that you are talking about when referring to EFC numbers, like 138 for DVI1 and 255 for DVI2. I tried both of those codes in my URC-8811 and the green light on the front of the TV responded to the signal by flashing the light, but the TV did not change inputs or show any other response. Any help would be greatly appreciated. Thanks!