I have an emerson RM4901 and I was able to locate the codes at this web-site:[Link: support.tandy.com]
This is an acrobat reader file and it takes a while to download. You should use the last 3 digits from the code list. To program the code you should hit the device button(TV, VCR, CD) and the light will blick once. You then should hit the code button, on my model it is label as Easy. You hold this button until the light blinks twice. Then enter in the 3 digit code for your device type. I hope this help. It worked for mine. The file is for a Radio Shack remote but it the codes work with my Emerson RM4901.