They are referring to the perform edit box rock, not the buttons on switchbar. AFAIK, you cannot stop mIRC from alphabetically sorting your perform commands. I honestly dont know why that feature was incorperated, nor why anyone would want it. I tried, once, to put my nickserve commands at the top, then joins on the bottom-- needless to say /n comes AFTER /j so nickserve didnt ident untill after I had already joined. That meant I had to rejoin all my channels for my +ao to come into effect...
if this could be somehow disabled Khaled--i would be greatly appreciative >:D (Unless there is already a way)