Install the nfs server, start the service, edit /etc/exports:
Code:
/media/videos 192.168.1.0/24(rw,sync)
(replacing 192.168.1 with your subnet)
Then run "exportfs -ra" on the server
On the client, install the nfs client, create a directory for the mount, and then mount it
Code:
mkdir /media/videos
mount server:/media/videos /media/videos
(replacing "server" with the IP address of your server, or the name of the server from /etc/hosts)
Those are the basic steps, if something fails you'll have to give us the applicable debugging information.