Should I upgrade BIOS before WIN7 install

I'm wondering if I need to upgrade my BIOS before going from Vista 32 bit to Windows & 64 bit. I can't tell that I'm having any problems now with the current BIOS. I have noticed there are updates on the ASUS site. Just not sure if it worth the risk (if any). Current BIOS is:
vendor Phoenix Technologies, LTD
version ASUS M2N-E SLI ACPI BIOS Revision 0801
date 04/25/2007

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