Thanks. This was immensely helpful. Haven't had a chance to try it with other games, but so far it works for Aliens.
I'm in the process of re-doing all of my control panels with working HAPP buttons and I'm alphabetically done with the numerals/A's (this will take a while). I'm going with the grouping idea you used for Rygar and Bank Panic because it's a lot more practical for when people do custom edits later (as they invariably will). I'm assuming a default button size of 250 for most games unless the CPO or the panel scale dictate otherwise.
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I have officially retired from sucking at everything I do. Life is much easier now.