EM64T compatibility on non 64bit OS and board

[NES]

My ebay purchase of LGA775 CPU did not get shipped so im planning to buy a new CPU intel 630 3.0ghz 2m cache 8000fsb HT for $209, that has 64bit...
My question is would it work with AOPEN 915g motherboard which does not confirm compatibility, windows xp pro (not 64bit version)??? I just dont want to loose anymore cash.

Intels quote:
* 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 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.
° Enabling Execute Disable Bit functionality requires a PC with a processor with Execute Disable Bit capability and a supporting operating system. Check with your PC manufacturer on whether your system delivers Execute Disable Bit functionality.

Thanks in advance,
NES

[DaFonz]

Processor will not operate (including 32-bit operation) without an Intel EM64T-enabled BIOS.

:)