I can confirm that the codes in the file area posted by Pat Spector DO work for settings above 8. I just set one of my lamps to 15 and using that ncf, was able to power it on and off.

[Link: remotecentral.com]

As for controlling the other house codes (other than A), I believe that the IR-543AH or the IR-AH543 (not sure what the lettering is) can control multiple code letters.