Automatic boot on 64 bits

some one have a ideia how i can do my os 10.6.1 automatic boot on 64 bits?

How did you measure your performance increase?
I don't have a 64-bit bench marking app & using a 32-bit app wouldn't prove a thing so, just like in the old days, I used a stopwatch.
I use 3 tests in both 32 & 64 bit modes. I repeated each step 3 times to get an average. I setup SL to log on automatically to the desktop for test #1. I used Activity Monitor to display the CPU cores during tests 2 & 3.
Test #1) Powered off & timed it from pushing the power until I saw the desktop. The difference between them was about 25%. Not bad.
Test #2) I copied the SL install DVD to a temp folder on my HD. The difference between them was only about 15%. Not Good. (the DVD interface IO is a hardware PIG & seriously needs a speed improvement so I pitched the DVD % out of the averaged score).
Test #3) I copied the SL install DVD in a temp folder on one internal HD to another HD. The difference between them was about 25%. Not bad.
So what really is difference here? The answer became obvious to me as I watched the CPU's 8 Cores at work. In 32-bit mode only 4 cores (2 per CPU) were used but in 64-bit mode all 8 cores were used. I also noticed that a core service called 'cvmsCompx8664' was being used by the System & the User as the translator for the 32-bit kernel but I didn't see in the 64-bit kernel mode.
What 64-bit programs are you using?
Just the Apple stuff that came with Snow Leopard because I do not trust 3rd party computer apps but that's a different story.

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      Model Identifier:          MacBook4,1
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      Boot ROM Version:          MB41.00C1.B00
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      Serial Number (system):          ***************
      Hardware UUID:          CA090417-06DE-52F7-8BAB-C0CA928EF8DE
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      User Name:          ***************************
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      64-bit Kernel and Extensions:          No
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