RH 7.3 doesn't have NTFS support in the kernel, you'd need to recompile the kernel with NTFS support in order to be able mount the drive.
You should be able to see the "man fstab" pages on what options you need to enable, either that or it'll tell you where else to look and find out.
Mandrake does have NTFS support built in. There are some others which do too but I can't remember them off the top of my head, sorry.