That is the problem, then. You need to track down drivers for the card and install them on Mac OS 8.6. We might be able to help you with that. Who makes the card?

There should be a company name silkscreened on the card somewhere. If there isn't, you can try going to the Apple menu and picking Apple System Profiler to give you a report of which cards are in which slots. I think that's on the second (Devices) tab.

Peace,

Drew