How to change BIOS and NIC settings for WOL

Although it is possible to change the MAC address in windows this just means windows ignores the hard coded MAC address when sending packets, the MAC address the NIC listens for in the WoL packet is hard coded (usually into read only memory). There is no way to change this.

As for changing the BIOS, you might find this difficult and VERY risky too.
As far as I am aware the BIOS can only be changed via special (privileged) 16 bit instructions. This means that the it cannot be done from an x64 operating system, and that it must be done from a ring 0 driver.

Individual manufacturers may provide other ways of performing this on specific lines of products, however there is no standard defined for this task.

There is a good reason for this too. What if a virus wanted to do what you are doing?