Thank you very much ajzchips.
The BIOS that you post, work nice and clean.
The board recognize now all the capacity of the WD 80 GB Hard Disk, and can boot from the disk.
The messages on the Power On Self Test, tells that is UDMA5 80GB, and all run well.
I don't know if greater capacity disks (over 80 GB), are recognizes as well. If you know that, please post a message about.
After I flash the BIOS that you post, I make some tests anyway. And I think that there is some things to improve:
1- I follow the instructions from the page
http://www.froggy.com.au/frogge/pepper/bmreport1.html
and find that the CPU microcode are old versions, I manage to get a more recente ones, (most of them from 1999). I use your patched BIOS, and add the new microcode, but I am afraid that the new BIOS does not work at all, and I have no possibility to recover a damage BIOS. Now I have something to lose, that I do not have before

:):):)
2- I enter the BIOS configuration, and when I enter the "Automatic Disk detection" (or somethink like this), the PC freeze. I don't know if this is normal.
I don't know if was you that make this patch to BIOS, but if you manage to make some more enhancements or find a new one (with a more recente CPU microcode, maybe), please let me know with a new reply to this post.
thanks again.
lukas