The fact that Prepcard detects a card doesn't necessarily mean that the card should work. I think each card has identification code that Prepcard can read, but there is still the question of drivers. Then again, some cards don't seem to need drivers, they just autoconfigure as RAM right away. Perhaps you can find a driver for your card on Aminet, but I kinda doubt it. There are not a whole lot of PCMCIA card drivers on Aminet, though there are a few.