Does my macbook air boot in 64 bit or 32 bit kernel

could anyone tell me whether my macbook air is booted in 64 bit kernel now.
When I boot the macbook air, I hold down 6 and 4 button. After it, when I go to "about this mac", " More Info...", and "software", I find that the item---64 bit Kernel and Extensions: No.
I totally confuse...

I read that MacBooks, including Air's, will not boot 64-bit. Apple has turned that ability off in the OS. Why? One can only speculate.
Dave M.
MacOSG Founder/Ambassador  An Apple User Group  iTunes: MacOSG Podcast
Macsimum News Associate Editor  Creator of 'Mac611 - Mobile Mac Support'

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