I hope someone can help me because all my research isn't getting me anywhere.

I have the Droid X and upgraded my 8GB micro SD card to a 16gb.

I wanted to reformat my 8GB so that I can use it for my camera, but all I can do on the Droid is erase the card, but when I put it into my camera to reformat it or if I put it into my Mac PowerBook Pro to reformat it, I'm not given the options to reformat/erase... In fact on my camera, I get an error message and my Mac doesn't recognize the card at all!!

Can anyone give me some suggestions... I have a perfectly good 8GB card that isn't worth much at the moment...