automatic restart from power off

[Lawrence]

If the power fails beyond the time my UPS can
support my PC, I have to push a button on the front panel to restart it. I would like my PC to start automatically because I need to put it in a remote location.
Is it possible to change this?
I have a Abit BX6 mother board.
If it is not possible, are there other motherboards that I would work?

[Bleu]

Once the UPS has shut down the computer (because the batteries ran out) it is the same as if you hit the off button. There is no power going to the motherboard untill you hit the power button.

[Lawrence]

Guess I needed to make my question a bit more clear :-)

When power is restored, I would like the system to reboot automatically *without* me needing to push any buttons.
How do I do this? I don't see any obvious BIOS settings.