It's never important, even with a SELECT *, because, unless you're viewing database data from the query analyzer, you can reference columns in any order you wish.
*cLFlaVA
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A pirate walks into a bar with a huge ship's steering wheel down his pants.
The bartender asks, "Are you aware that you have a steering wheel down your pants?"
The pirate replies, "Arrrrr! It's driving me nuts!