For my own sanity I'm blogging this, since every time I have to do it I end up jumping through the same hoops and cursing myself for not blogging it!
I have a USB external drive on one of my machines. I want it shared across the network. It's an old Windows drive formatted as NTFS. Here are the steps:
1. On the "server" install required services and applications. As root:
$ yum install nfs-utils ntfs-3g ntfs-config fuse
FUSE should be there already, but just in case. The GUI for ntfs-3g is optional.
2. Make sure the NFS services is enabled and loads on boot: