You have to be old enough to remember Abbott and Costello, and too old to REALLY understand computers, to fully appreciate this. If Bud Abbott and Lou Costello were alive today, their infamous sketch, 'Who's on First?' might have turned out something like this: COSTELLO CALLS TO BUY A COMPUTER FROM ABBOTT ABBOTT: Super Duper computer store. Can I help you? COSTELLO: Thanks I'm setting up an office in my den and I'm thinking about buying a computer. ABBOTT: Mac? COSTELLO: No, th...