How do I know my laptop is 64-bit compatible?

How do I know my laptop is 64-bit compatible? I recently plan to buy a new laptop to run a 64-bit OS, but a friend told me that my current laptop is already 64-bit.
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bert [Entry]

"Ok, from the intel site:

Intel® EM64T requires a computer system with a processor, chipset, BIOS, operating system, device drivers and applications enabled for Intel EM64T. Processor will not operate (including 32-bit operation) without an Intel EM64T-enabled BIOS. Performance will vary depending on your hardware and software configurations. See http://www.intel.com/info/em64t for more information including details on which processors support Intel® EM64T or consult with your system vendor for more information.

So yes it is 64 bit."