Glad it worked at last!

MakeHex doesn't have a GUI, but it works in all versions of Windows that I have. If you create the file above and save it in the directory where you unzipped MakeHex. Then drag rc5.irp onto MakexHex.exe and release. It will instantaneously create a text file rc5.hex that will have the commands. You need only vary the line:

Function=123..124

To get all commands:

Function=0..127

To get only 63:

Function=63..63

It is probably easier to get all 128 commands (0..127) at one time and find them in rc5.hex and copy into the T2 editor program where it converts pronto hex.

-Jon