Rob klein asked:
"How is this related to the 8051 and what difference does it make which brand uses which protocol?"

Dave hui answered:
"i use 8051 to generate the protocal"

Dave, if you are generating the codes, the brand of the device is irrelevant. If you have some specific question about how to program the 8051 or how to proceeed to write some routine you can find help here, but just because somewhere in your project lies a '51 doesn't nean that all aspects of your project can be discussed here.