So, my brother has a PC running WinXP, and he has recently bought Myst III for it, not realizing that the game is on a DVD and he does not have a DVD drive... he does however own an external HDD that he uses pretty often, so I told him, sure, bring the game over with your ext HDD and we'll copy the files over. I plugged the drive into the firewire port and it mounted just fine, I could read files without any problems, but I simply could not write to the drive. I tried everything I could think of... Opeing the info window told me that the drive was not able to be modified, and creating a folder on the desktop and dragging it over to the drive gave me an error message about the it not being able to be modified. I even tried to plug the drive in using the USB port instead, and in that instance it would not even mount. What's this all about? I used to have a PC, and I used an external HDD to copy all of my files over to my Mac without any problems... I would really like to know how to resolve this problem, if for no other reason than for future reference. Thanks a lot in advance.