Why doesn't a regular memory card fit into my Blackberry Curve 8330?Z?

[jonatalastic!]

I took my sisters memory card out of her lg enV and she has the SD one and it would fit, so I tried to put my friends memory card into it and it wouldn't fit either and she had the BlackBerry (NSDQ: RIMM) pearl, so iks there a certain "blackberry curve" memory card?

[diablo]

1.Remove the battery cover (located on the back of the device).
2.Slide the media card holder toward the side of the device to unlock it.
3.Lift up on the media card holder.
4.Line up the microSD card with the media card holder and slide it into place as
5.Place the media card into the slots in the media card holder so that the metal contacts on the media card align with the metal contacts on your device.
6.Lower the media card holder into place and slide toward the center of the device to lock into place.
7.Replace the battery cover.

Hope this helps.