Networked two linux computers, can't access files across?

From: GS (
Date: 10/02/05

Date: 2 Oct 2005 10:15:41 -0700

I have two linux computers networked. I have the Internet
configurations working OK, but I need to share files between two, I
restarted nfs, and mounted on other machine, still can't access. Do I
have to enable anything else?. Appreciated for any info.