Does ACPI sound like BIOS? I'm not sure what kind of BIOS this machine has. Compaq doesn't let you get to the BIOS. Instead if you hold the DEL key while booting, you get this lame "DOS-like" window with very limited menu items. It's not allowing me to actually make any changes such as clock speed, etc. About the only thing it lets me do is set a password and/or reset the system defaults. I guess they made it that way so people like me can't mess up anything. Also, since this is the OEM version of the FIC AZ31, it doesn't come with the NOVUS II features or the ability to set the clock from the board.
The article you mentioned only talks about unlocking the multiplier using the L1. That would be fine if I had a board that allowed me to set voltage or BIOS that allowed me to access clock speeds, but I don't. That's why I was trying to see if there was any way I could replace the BIOS that's on the machine now. However, I did come across this very interesting article that describes how you can take the pencil trick one step farther and actually unlock the L3, L4, and L7 leads to set the voltage and clock speeds that are hard wired on the chip. Take a look and let me know if this makes any sense. It may be my only options, but I don't want to risk it if I'm not sure. Since I've never done anything like this before, I don't want to attempt it until I get positive confirmation that it works.
As far as my BIOS goes, do this information help you out. I don't know if this is it or not, but this is what the FIC manufacturing specs for my board describe for the BIOS.
ACPI 1.0B, APM 1.2, PnP 1.0a, SMBIOS 2.3, DMI 2.0, WfM2.0,
Smart for HDD, USB 1.1, PC99, PCI 2.2
Appreciate any info you can give me.