I can access mac drives in windows using macdrive program, leopard cannot see my win drives.

in fusion I can just drag and drop from mac to windows and viceversa, after installing vmware tools.

There is a program to allow leopard to read ntfs but im not sure what its called, I use hardware raid on my vista, so leopard doesn't even recognise the raid so I gave up.

Good Luck

Now I software raid my leopard so macdrive can't see it anymore. So I give up again.
It all still works with fusion though.