That it worked with OS 9 and doesn't now isn't necessarily a problem. It is most likely because the card is PCI (is it?) and doesn't have the drivers installed.

This is just like it is in Windows. If you install a PCI card while running Windows XP and then decide to install Windows 2000, you need to go back and re-install the card's drivers. The same is true with Mac OS 9 and Mac OS 8.6. You most likely just need to re-install the drivers for the ethernet card.

If you would answer the question about whether or not the card is PCI or CSII, you'll get a more definite response.

Peace,

Drew