Ok, thanks all. I figured out how to save and exit. I've done this twice and it still will not do anything but read the device when connected to my iMac.
I read some earlier and it stated there was a 'fix' when updating from earlier versions of Mountain Lion to 10.8.2 which I have. Now supposedly you can only read NTFS. If that is true then I'm going to be real pissed with Apple.
Did you know there are only 5000 Snow Leopards in the wild now and they are confined to Central Asia? However, the effective global population (those likely to reproduce) is less than half that number.