Enter The BIOS

I've been mucking around with the Z-BOX, and signs are pointing towards some settings in the BIOS. OK, fine, let's go poke around. Except. I can't get in the BIOS. Instructions say press the Delete Key. That doesn't work. OK, fine, maybe the BIOS doesn't like the wireless keyboard. Let's go get a plain, ordinary USB keyboard (we have left PS/2 in the past). It doesn't work any better. I opened a support ticket with Zotac. We shall see what they have to say.