I read somewhere that reading or writing on to an NTFS partition could be disastrous !!!!
At present neither of the 2 Linux NTFS drivers enables succesful write support - with the first one there is a real chance of corrupting your filesystem - the second improves a little but is extremely limited to the point of not being viable for day to day use - so in short, you still cant write to NTFS succesfully - you might want to consider a FAT32 partition to be used to share data betwween the OS's
As for reading NTFS, because of legal reasons Red Hat chose to leave out the NTFS drivers - so you'd typically get the RPM as I mentioned before.