I make mine manually, and it is by no means complicated. Just download a text to gct converter (search google for txt2gct Mac), open up text edit, copy and paste the code, then use your converter on your text file and rename it RSBE01.gct. It's really that easy.
If you don't already have the code, just do a quick google search, or locate it on YouTube. Often times uploader's will post their codes in the description of their videos. I'm sure it should be easy enough to find.
You must have misunderstood me when I said that I know exactly how this stuff works. If you wanted me to do this myself, I would have to buy a newer mac computer, spend money on bootcamp for mac, install windows, get txt2gct, and then put in this little amount of text for just this one file.
OR one of you guys that have a windows could do it in 5 seconds because it is "by no means complicated". If you think my previous sentence is not complicated, then you have a messed up idea of complicated.
I cannot do this on a mac, which is another one of my statements you seemed to have misunderstood. I'm surprised how long this completely simple request is taking.
EDIT: I've gotten the code from someone else. Somehow they managed to comprehend what I needed based on the same information I put in the original post of this thread. Crazy, huh?