Do MacBook Early 2009 Model have 64-bit processor?

I have a MacBook While 13', Early 2009 Model [ http://support.apple.com/kb/SP504 ]
I was using Leopard till date, but now want to upgrade to Snow Leopard.
I read technical specifications for Snow Leopard, and it says that 64-bit support is available with 64-bit processor only [ http://support.apple.com/kb/SP575 ]
I don't know whether my MacBook have 64-bit processor or not? Do any know about it?
Can I install Snow Leopard on my MacBook?
Help me, Please.
If possible, please show me how can I find whether my MacBook supports 64-bit processing or not?

Note too, that unless you have more than 4GB of RAM installed, and have applications that are written in 64bit and can access more than 4GB of RAM, there is no discernable difference between running the 32bit kernel or the 64bit kernel.
Both the 32bit kernel and the 64bit kernel use a memory address system that can use more than 4GB RAM for those applications that support using 64bit memory.  The 32bit kernel itself can only address <4GB RAM for kernel processes, but since it is pretty rare that the kernel itself ever needs anywhere near that much RAM, the difference between the two kernels is pretty much a non-issue for most users (even those running 64bit applications in machines with >4GB of RAM installed).

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    MacBook (13-inch, Early 2008)
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    4
    4
    MacBook (13-inch, Mid 2007)
    4
    4
    4
    MacBook (13-inch, Late 2006)
    4
    4
    4
    MacBook (13-inch, Mid 2006)
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