The way I would solve this:

The only Bios prob here could be that it doesn't support disks larger than 36 GB although this is a very uncommon prob. (the 512MB, 2GB, 4GB, 8.4GB limits are more known probs)
(Anyway if this is the case you can set smaller disk capacity or use some DDO prog.)

How to get the disks to work:

In BIOS: make sure EIDE channels are on
Check wires (data and power) (data red side is 1)

- set your first disk on the primary EIDE cable and set HDD jumper to master set your BIOS to auto or fill in the specs yourself (they are on a label on the disk.)

- set your second disk on the second EIDE cable and set HDD jumper to master set your BIOS to auto or fill in the specs your self (they are on a label on the disk.)

leave the CDROMS disconnected or set them as slaves.

This normally works cause both Harddisks are on different EIDE channels. (And they are both primary so your system will even perform a little bit faster when you make a copy from one disk to the other.)

do a cold boot:
your POST shows up with the message

primary IDE master detected: yourHDDbrand
second IDE master detected: yourWD

now you could play with your disk:

run your disk tool from WD or run Fdisk
make some partitions reboot and format them.