I have a PC and a MBP, and I want to regularly share files between the two of them. Problem is, my external HDD only works on one of the computers. If I format it HFS+ for my Mac, my PC can't read it. If I format it NTFS, then my Mac can't write to it. I don't want to use FAT32 since it has a 4GB file limit, and I can't use MacDrive on my PC since it's running Vista 64 bit, which isn't supported. Is there any other file system than FAT32 that would be readable and writeable on both computers?