Nikon D70 won't recognize the 2 GB, type II memory card

Try to clean the contacts of the memory cards and, mostly, of the memory card bay of the camera. Use a dry anti-static fabric (e.g. what we use to clean eye-glasses). DON'T use any liquid cleaner of anything like that!

This is a card reader problem. It can be caused by several things.

It could be:

Bad card. Try the card in another camera
Bad or bent contacts in the camera. This is a Nikon service Center fix.

Be sure the card is securely position in the camera. Don't force it, but it should feel seated. Sometinmes, turning it off, waiting a minute and turning it on clears the problem.

If none of these are a solution, then it could be the ribbon cable between the mother board and the CF slot. It's a common problem that many people have had. That's also a Nikon fix.

Let me know if any of this helped.